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A1 modal verb /kʊd/

could

Meaning
Used to indicate possibility, ability, or permission in the past or as a polite suggestion.
Example
He could swim when he was a child.
C2 noun /kəˈnɑːrd/

canard

Meaning
a false or unfounded story or rumor
Example
The article turned out to be nothing more than a canard.
B2 noun /ˈkɒmənˌteɪtər/

commentator

Meaning
a person who reports and discusses events, especially on TV or radio
Example
The commentator described the football match in detail.
C1 noun /krʌˈsteɪʃən/

crustacean

Meaning
an aquatic animal with a hard shell, such as crabs, lobsters, and shrimps
Example
Crabs and lobsters are well-known crustaceans.
C1 adjective /ˈkæn.dɪd/

Candid

Meaning
truthful and straightforward; frank and honest in expression
Example
I appreciate your candid opinion about the project.
C2 noun /ˈkjuːbeb ˈpepər/

Cubeb Pepper

Meaning
aromatic spice with a slightly bitter taste and cooling aftertaste
Example
Cubeb pepper is used in traditional Indonesian cuisine.
B2 adjective /ˈsɪvɪk/

civic

Meaning
relating to a city, town, or the duties of its citizens
Example
The mayor encouraged people to take part in civic activities.
C1 verb /kəmˈpjuːt/

compute

Meaning
To calculate or determine by using a computer or mathematical methods.
Example
The software can compute the total cost in seconds.
C2 noun /ˈkɒksweɪn/

coxswain

Meaning
the person in charge of navigating and steering a boat, especially a racing or small boat
Example
The coxswain shouted instructions to the rowing team.
B1 verb /ˈkæptʃər/

capture

Meaning
to take control of something or someone by force
Example
The soldiers managed to capture the enemy base.
B1 adjective /ˈtʃælɪndʒɪŋ/

challenging

Meaning
difficult in a way that tests one's abilities
Example
The mountain climb was challenging but rewarding.
A2 noun /kəˈlek.ʃən/

Collection

Meaning
a group of objects gathered together; the action or process of collecting
Example
She has an impressive collection of vintage books in her library.
B1 adverb /ˈkeərləsli/

carelessly

Meaning
without care or attention; in a negligent or reckless manner
Example
He carelessly left the door unlocked.
B2 noun/adjective /kənˈstɪtʃuənt/

constituent

Meaning
Noun: A member of a constituency or an essential part of something. Adjective: Being a necessary part of a whole.
Example
The senator met with his constituents to discuss local issues.
B2 noun /kənˈtroʊlər/

controller

Meaning
a person or device that manages, directs, or regulates something
Example
The game controller made it easy to play the video game.
C2 noun /ˌkɒnsæŋˈɡwɪnɪti/

consanguinity

Meaning
The fact of being descended from the same ancestor; blood relationship.
Example
The degree of consanguinity was important in inheritance laws.
A1 noun /ˈtʃɪk.ən/

Chicken

Meaning
a domestic fowl kept for its eggs or meat; the meat of this bird used as food
Example
The chicken laid fresh eggs every morning.
B2 noun /ˌkɒnsərˈveɪʃən ˈmuːvmənt/

Conservation Movement

Meaning
A political, environmental, and social movement that seeks to protect natural resources including plant and animal species as well as their habitat for the future.
Example
The conservation movement began in the 19th century to protect wildlife.
B2 verb /ˈkɒmpənseɪtɪd/

compensated

Meaning
to have been given something, typically money, as a recompense for loss, suffering, or work done
Example
The workers were compensated for their overtime hours.
B2 noun /kəˈθɒlɪsɪzəm/

catholicism

Meaning
The faith, practice, and church order of the Roman Catholic Church.
Example
Catholicism has a long history and rich traditions.
A2 verb /ˈtʃeɪndʒɪŋ/

changing

Meaning
The act of becoming different; ongoing process of change.
Example
The weather is changing rapidly.
C2 noun /koʊˈæɡjələnt/

coagulant

Meaning
a substance that causes blood or another liquid to clot
Example
The doctor applied a coagulant to stop the bleeding quickly.
C2 verb /kædʒ/

cadge

Meaning
To beg or obtain something, especially food or money, without paying for it.
Example
He tried to cadge a free meal from the restaurant.
C2 noun/verb /ˈkʌdʒ.əl/

cudgel

Meaning
A short, thick stick used as a weapon; to beat with a cudgel.
Example
The guard used a cudgel to chase away the thief.
C2 noun /ˌkæstɪˈɡeɪʃən/

castigation

Meaning
Severe criticism or punishment for wrongdoing.
Example
The manager’s harsh castigation shocked the entire team.
A2 noun /ˈkɑr.pɪt/

Carpet

Meaning
a floor covering made from thick woven fabric
Example
The Persian carpet in the living room was a family heirloom.
B1 noun /ˈkaʊnti/

county

Meaning
A territorial division within a country, typically a region with its own local government.
Example
She grew up in a small county in northern England.
C2 noun, verb /ˈkæŋkər/

canker

Meaning
A fungal disease of plants; an ulcerous sore in the mouth; to corrupt or destroy slowly
Example
The tree was infected with a canker that damaged its bark.
C2 verb /ˌkaʊntərˈmænd/

countermand

Meaning
to revoke or cancel an order or command
Example
The general countermanded the previous orders immediately.
A2 noun /ˈkænsər/

cancer

Meaning
A disease in which abnormal cells divide uncontrollably and destroy body tissue.
Example
Smoking is a leading cause of lung cancer.
A2 adjective /kənˈsɜːnd/

concerned

Meaning
worried or anxious about something; involved or interested in something
Example
She was concerned about her mother's health.
B2 verb /koʊp/

cope

Meaning
to deal effectively with something difficult
Example
She had to cope with a lot of pressure at work.
C2 adjective /sɛnˈtrɪfjʊɡəl/

centrifugal

Meaning
Moving or tending to move away from a center.
Example
The centrifugal force pushes the clothes to the sides of the washing machine.
B2 noun /kaʊtʃ/

Couch

Meaning
a long upholstered seat for more than one person, typically with a back and arms
Example
The family gathered on the couch to watch a movie.
C1 noun/verb kənˈdʒɛk.tʃər

conjecture

Meaning
An opinion or conclusion formed on the basis of incomplete information; to form an opinion or supposition about something.
Example
The scientist's conjecture was later proven true.
C1 adjective, noun /ˈkɑːr.dɪ.nəl/

cardinal

Meaning
As an adjective: of prime importance; as a noun: a high-ranking Catholic clergyman or a type of bird.
Example
Honesty is a cardinal virtue in life.
C1 adjective /ˈkoʊvərt/

covert

Meaning
hidden, secret, or not openly acknowledged
Example
The spy conducted a covert operation behind enemy lines.
B1 verb /kənˈtɪnjuɪŋ/

continuing

Meaning
to keep doing something without stopping
Example
They are continuing their journey despite the rain.
C2 noun /tʃæf/

Chaff

Meaning
the husks of corn or other seed separated by winnowing; worthless things; light-hearted joking
Example
The farmer separated the wheat from the chaff using traditional methods.
B1 adjective /ˈtʃaɪl.dɪʃ/

Childish

Meaning
immature and silly; behaving in a way that is typical of a child but inappropriate for an adult
Example
His childish behavior during the meeting was quite embarrassing.
B1 noun ˌkɒn.səˈveɪ.ʃən

conservation

Meaning
The protection of plants and animals, natural areas, and interesting and important structures and buildings, especially from the damaging effects of human activity.
Example
Conservation of forests is crucial for climate stability.
C1 noun /kɑːɡ/

cog

Meaning
A tooth on the rim of a wheel or gear; metaphorically, a minor but necessary part of a larger system.
Example
He felt like just a small cog in a big machine.
B1 noun /kəmˈpær.ɪ.sən/

Comparison

Meaning
the act of examining the similarities and differences between two or more things
Example
The teacher made a comparison between the two poems to show their different styles.
B2 noun /ˈsel.ər.i/

Celery

Meaning
a green vegetable with long crisp stems that can be eaten raw or cooked
Example
I added chopped celery to the soup for extra flavor.
C1 adjective /ˈtʃɪə.ləs/

Cheerless

Meaning
lacking happiness or comfort; gloomy; depressing; without cheer
Example
The old house looked cheerless and abandoned in the winter rain.
C1 verb /kʌl/

cull

Meaning
to select or remove from a larger group, often to reduce numbers
Example
The farmers decided to cull the sick animals from the herd.
C1 noun /ˈkærət/

carat

Meaning
a unit of weight for precious stones, equal to 200 milligrams
Example
She received a two-carat diamond ring for her engagement.
C1 adjective /ˈkjʊərəbl/

curable

Meaning
Able to be cured or healed.
Example
The doctor assured her that the disease was curable.
C2 noun /kɒŋk/

Conck

Meaning
a shell, especially a large spiral one used as a horn or for decoration
Example
The priest blew the conch shell to signal the start of the ceremony.
C1 adjective /ˌkætəˈɡɒrɪkəl/

categorical

Meaning
Absolute and without exception; expressed clearly and directly.
Example
She gave a categorical denial of the allegations.
C1 noun /kəˈnɛəri/

canary

Meaning
a small, usually yellow bird known for its singing; also used as a warning sign in dangerous conditions
Example
The canary sang beautifully in its cage.
C1 adjective kəʊˈhiː.sɪv

cohesive

Meaning
Characterized by or causing cohesion; forming a united whole.
Example
The team displayed a cohesive strategy.
C2 noun /ˈtʃaɪ.nə bɑːks/

China box

Meaning
a small evergreen shrub with tiny white fragrant flowers
Example
The China box plant produced clusters of small white flowers.
C1 noun ˈkəmˌpaʊndɪŋ

compounding

Meaning
The process whereby interest is added to an amount of money and future interest is calculated on the total.
Example
Compounding interest increases the value of investments over time.
A2 noun /ˈkɔːrnər/

corner

Meaning
the place where two edges or sides meet
Example
The store is just around the corner.
B1 noun /ˈkɛmɪkəl/

chemical

Meaning
a substance produced by or used in a chemical process
Example
The factory releases harmful chemicals into the river.
A1 noun /tʃeɪndʒ/

change

Meaning
The act or instance of making or becoming different.
Example
Change is inevitable for growth.
B1 verb /kənˈsuːm/

consume

Meaning
to eat or drink; to use up; to destroy completely
Example
We consume a lot of water during summer.
C2 verb /kənˈtɔːrt/

contort

Meaning
to twist or bend out of the normal shape
Example
She contorted her face in pain after the injury.
B1 adjective /kəmˈpetətɪv/

competitive

Meaning
relating to or characterized by competition; having a strong desire to win or be more successful
Example
She has a competitive spirit that drives her to excel.
B2 adverb /ˈkɒnsɪkwəntli/

consequently

Meaning
as a result; therefore
Example
He didn’t study, and consequently he failed the exam.
C2 noun /kəˈtæb.ə.lɪ.zəm/

catabolism

Meaning
The breakdown of complex molecules in living organisms to form simpler ones together with the release of energy; destructive metabolism.
Example
Catabolism plays a crucial role in cellular energy production.
C2 noun/verb /ˈkɜːrtsi/

curtsy

Meaning
a respectful bow made by women by bending the knees with one foot in front of the other
Example
She gave a quick curtsy before leaving the stage.
C2 adjective /ˈsɪlieɪtɪd/

ciliated

Meaning
Having minute hairlike projections (cilia) on the surface of cells or organisms.
Example
The ciliated cells in the respiratory tract help move mucus out of the lungs.
B1 adverb /ˈkʌrəntli/

currently

Meaning
at the present time; now
Example
He is currently working on a new project.
C2 noun /kənˈfɛsər/

confessor

Meaning
A person who confesses sins or secrets, especially to a priest.
Example
The confessor listened patiently to the troubled man.
B1 noun ˈkɒnsept

concept

Meaning
An abstract idea or general notion
Example
The concept of chasing two rabbits teaches focus.
A1 noun /ˈkʌn.tri/

country

Meaning
a nation with its own government and borders
Example
Bangladesh is a beautiful country with rich culture.
C2 noun /ˌkɑːnfɔːrˈmeɪʃən/

conformation

Meaning
The shape, structure, or arrangement of something.
Example
The scientist studied the molecular conformation of the protein.
B1 adjective /kənˈviː.ni.ənt/

Convenient

Meaning
fitting in well with a person's needs, activities, and plans; suitable and practical
Example
The new shopping mall is very convenient for our family.
B2 noun /ˈkɑːrɡoʊ/

cargo

Meaning
goods carried by a ship, plane, or other transport
Example
The ship was loaded with valuable cargo.
C2 adjective /ˌkrɪp.təˈɡræf.ɪk/

cryptographic

Meaning
Relating to cryptography; involving or using secret codes or ciphers for security.
Example
Banks use cryptographic technology to protect transactions.
C2 noun /kənˈtɔːrʃən/

contortion

Meaning
a twisted or bent shape; the act of twisting out of the normal shape
Example
The gymnast's contortion amazed the audience.
C1 noun /kənˈtɪnjuəm/

continuum

Meaning
A continuous sequence in which adjacent elements are not perceptibly different from each other, but the extremes are quite distinct.
Example
Life and death are often seen as part of the same continuum.
A2 noun /kɔːrs/

course

Meaning
a direction, path, or a set of educational lessons
Example
She enrolled in a computer science course.
C1 noun /ˈsɪn.ɪˌsɪz.əm/

cynicism

Meaning
An inclination to believe that people are motivated purely by self-interest; skepticism.
Example
His cynicism made it hard for him to trust anyone.
A2 verb kriˈeɪt

create

Meaning
To bring something into existence; to make or produce something new.
Example
Unmanaged growth can create complex challenges.
A2 noun ˈtʃælɪndʒ

challenge

Meaning
A call to take part in a contest or competition, especially a demanding or stimulating one; a task or situation that tests someone's abilities.
Example
Plastic pollution poses a significant challenge to global health.
C1 noun /ˈkɒlərə/

cholera

Meaning
An infectious disease of the small intestine causing severe vomiting and diarrhea.
Example
The village suffered an outbreak of cholera after the flood.
B2 noun ˈkæp.sjuːl

capsule

Meaning
A small soluble case of gelatin containing a dose of medicine, swallowed whole.
Example
Capsules contain controlled environments.
B1 noun ˌkriː.eɪˈtɪv.ɪ.ti

creativity

Meaning
The ability to use imagination to produce original ideas or to make something new or imaginative.
Example
His creativity was evident in his artwork.
B1 noun /kənˌɡrætʃəˈleɪʃən/

congratulation

Meaning
an expression of praise or joy for someone’s achievement or good fortune
Example
She sent a congratulation to her friend on winning the award.
C1 noun /krɛst/

crest

Meaning
the top of a hill, wave, or mountain; a symbol of identity
Example
The hikers reached the crest of the mountain at sunrise.
C1 noun, adjective /ˈsɛntənəri/ or /sɛnˈtɛnəri/

centenary

Meaning
The hundredth anniversary of a significant event; relating to a period of 100 years.
Example
The school celebrated its centenary with a grand event.
B2 adjective /kruːd/

crude

Meaning
in a natural or raw state; not yet processed or refined
Example
The crude oil is processed into fuel and chemicals.
C1 noun sɪˈmɛntɪd ɡreɪv

cemented grave

Meaning
A grave that is constructed with cement for permanence.
Example
The cemented grave of the martyrs was seen near the river.
B2 verb /saɪt/

cite

Meaning
to quote; to mention as an example or proof
Example
The lawyer cites relevant case law.
C2 noun /kɒzˈmɒɡ.ə.ni/

cosmogony

Meaning
the study or theory of the origin of the universe
Example
The book provides an overview of different cosmogonies throughout history.
B2 noun /ˈkaʊnsələr/

councillor

Meaning
an elected member of a local council who helps make decisions and represent the community
Example
The councillor spoke to residents about improving local roads.
B1 verb /kəmˈbaɪn/

combine

Meaning
To bring two or more things together to form a single unit.
Example
They decided to combine their resources for the project.
C2 noun /ˈsɪɡnət/

cygnet

Meaning
a young swan
Example
The cygnet swam closely behind its mother.
B1 adjective /ˈkɒmplɪˌkeɪtɪd/

complicated

Meaning
consisting of many interconnected parts; difficult to understand
Example
The instructions for the machine are too complicated to follow.
C1 noun /ˈkæləs/

callus

Meaning
A thickened and hardened part of the skin or soft tissue, especially in an area subjected to friction.
Example
A callus formed on his palm from using tools every day.
C2 noun /ˌkɒnvəˈluːʃən/

convolution

Meaning
a twist, coil, or a complex and intricate shape or arrangement
Example
The brain has many convolutions that increase its surface area.
A2 noun /ˈkaʊ.bɔɪ/

Cowboy

Meaning
a man who tends cattle on a ranch, especially in the western United States
Example
The cowboy rode his horse across the vast prairie to find the cattle.
C2 noun /ˈkæt.kɪn/

Catkin

Meaning
a drooping, often tasseled cluster of small flowers found on willow and birch trees
Example
The willow tree's catkins swayed gently in the spring breeze.
B2 noun /kənˈsɛʃən/

concession

Meaning
something that is granted, especially in response to demands; a compromise
Example
The company made several concessions during the negotiations.
B2 adverb /ˈkrɪtɪkli/

critically

Meaning
in a way that expresses disapproval or a very serious, important way
Example
He was critically injured in the accident.
B2 noun /ˈklær.ɪ.ti/

clarity

Meaning
The quality of being coherent and intelligible; transparency or lucidity.
Example
The speaker's clarity made the concept easy to understand.
C2 adjective /ˈkæp.ʃəs/

Captious

Meaning
tending to find fault or raise petty objections; fault-finding; critical
Example
His captious remarks about every small detail made the meeting very unpleasant.
A2 verb /kəˈnɛkt/

connect

Meaning
To join or fasten together; to establish a link or relationship.
Example
Social media helps us connect with others.
C2 noun /kɒnˌtek.stʃu.ə.laɪˈzeɪ.ʃən/

contextualization

Meaning
The process of placing something in its proper context or setting to understand it better.
Example
Contextualization of historical events helps students understand them better.
A2 noun ˌkɒmpəˈtɪʃən

competition

Meaning
The activity or condition of competing; rivalry for supremacy.
Example
Competition grew between language groups.
B2 verb /ˈkeɪtər/

cater

Meaning
To provide food, drinks, or services, usually for an event or group.
Example
The company catered the wedding reception.
C1 noun /ˈkoʊhɔːrts/

cohorts

Meaning
Groups of people who share a common feature or experience.
Example
Researchers compared the health outcomes of different cohorts.
B2 noun /kənˈdʌktər/

conductor

Meaning
a person who directs a performance or someone who collects fares on public transport; or a material that conducts electricity
Example
The conductor waved his baton to start the orchestra.
A2 verb /kənˈsɪdər/

consider

Meaning
to think carefully about something, especially before making a decision
Example
She is considering studying abroad next year.
C2 noun /ˌkæv.əlˈkeɪd/

cavalcade

Meaning
a formal procession of people riding on horses or in vehicles
Example
The king’s arrival was marked by a grand cavalcade.
A1 verb /ˈkæri/

carry

Meaning
To support and move something or someone from one place to another.
Example
She carried the bag across the street.
A1 noun /kloʊðz/

clothes

Meaning
garments worn on the body
Example
She bought new clothes for the party.
B2 noun /kleɪ/

clay

Meaning
a natural material made of fine earth that becomes hard when baked, used for making pottery
Example
The artist molded the wet clay into a beautiful vase.
B1 noun /ˈker.ləs.nəs/

Carelessness

Meaning
failure to give sufficient attention to avoiding harm or errors
Example
His carelessness with money led to serious financial problems.
C1 verb /ˌkaʊntərˈbæləns/

counterbalance

Meaning
to offset or balance the effect of something
Example
Exercise can counterbalance the negative effects of stress.
B2 verb /ˈklærɪfaɪ/

clarify

Meaning
to make clear; to explain more clearly
Example
The teacher clarifies the difficult concept.
C1 noun /ˌkɒŋɡrɪˈɡeɪʃən/

congregation

Meaning
a group of people assembled for religious worship or a common purpose
Example
The congregation gathered to hear the sermon.
C1 noun kəˈlɛktɪvɪzəm

collectivism

Meaning
The practice or principle of giving a group priority over each individual in it.
Example
Collectivism emphasizes the importance of group over individual interests.
C2 verb /kənˈvɑːlv/

convolve

Meaning
to roll or twist together; to coil or entwine
Example
The vines convolve around the tree trunk.
C1 adjective /kənˈvɜːrdʒənt/

convergent

Meaning
tending to move toward a common point or result
Example
The two rivers have a convergent path before entering the lake.
C2 verb /ˈtʃæfɪŋ/

chaffing

Meaning
Teasing or joking in a lighthearted way.
Example
They were chaffing each other during lunch.
B2 noun /ˌkɒrəˈleɪʃən/

correlation

Meaning
a mutual relationship or connection between two or more things
Example
Researchers found a strong correlation between diet and heart disease.
B1 noun kəˈmɪt.mənts

commitments

Meaning
Formal pledges or promises to do something, especially in terms of obligations or agreements.
Example
Global commitments to renewable energy are increasing.