collaboration
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B2 noun kəˌlæbəˈreɪʃən

collaboration

Meaning
The action of working with someone to produce or create something
Example
International collaboration is necessary to fight pollution.
C2 noun /ˈkætəˌklɪzəm/

cataclysm

Meaning
A sudden and violent event that causes great destruction or upheaval.
Example
The earthquake was a cataclysm that reshaped the city.
B1 adverb /ˈkʌmftəbli/

Comfortably

Meaning
in a comfortable manner; without difficulty or effort; with ease
Example
She was sitting comfortably in her favorite chair.
C2 verb /kəˈmɪz.ə.reɪt/

commiserate

Meaning
To express sympathy or compassion for someone's misfortune.
Example
She called her friend to commiserate after his loss.
C2 noun /ˈkruːɪt/

cruet

Meaning
a small container, especially for salt, pepper, oil, or vinegar, used at a dining table
Example
She filled the cruet with olive oil for the salad.
C1 adjective /ˈkɒn.keɪv/

concave

Meaning
curved inward like the inside of a bowl
Example
The mirror had a concave surface that magnified her reflection.
B2 verb /kənˈtæmɪneɪt/

contaminate

Meaning
To make something impure, dirty, or harmful by contact with a poisonous or polluting substance.
Example
The river was contaminated by industrial waste.
C2 noun /ˌkɒnsaɪˈniː/

consignee

Meaning
the person or company to whom goods are delivered
Example
The consignee received the shipment on time.
B2 adjective /kənˈvɪnsɪŋ/

Convincing

Meaning
believable; credible; persuasive; able to make someone believe something
Example
His convincing argument won over the entire jury.
B1 noun ˈklaɪ.mət tʃeɪndʒ

climate change

Meaning
A change in global or regional climate patterns, attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.
Example
Climate change is causing more natural disasters.
C2 noun /kənˈkɔːrdəns/

concordance

Meaning
Agreement; also an alphabetical index of the principal words in a book.
Example
There is a strong concordance between the two reports.
C1 noun /ˌkɒn.stəˈleɪ.ʃən/

constellation

Meaning
a group of stars forming a recognizable pattern in the night sky
Example
Orion is one of the most famous constellations.
B2 noun /ˈkɑːrɡoʊ/

cargo

Meaning
goods carried by a ship, plane, or other transport
Example
The ship was loaded with valuable cargo.
B1 noun /kənˈfjuː.ʒən/

Confusion

Meaning
lack of understanding; uncertainty; the state of being bewildered or unclear in one's mind
Example
There was confusion about the meeting time, so half the team arrived late.
A2 noun /ˈkʌstəmər/

customer

Meaning
a person or organization that buys goods or services from a store or business
Example
The shopkeeper greeted the customer with a smile.
A2 verb /kaʊnt/

count

Meaning
to determine the total number of something
Example
She carefully counted the money on the table.
C2 adjective /ˈkrɛdʒʊləs/

credulous

Meaning
Having or showing too great a readiness to believe things.
Example
The credulous child believed every story she heard.
C1 noun /ˈsɪvɪks/

civics

Meaning
the study of the rights and duties of citizens and how government works
Example
Civics helps students understand their responsibilities as citizens.
B2 adjective ˌkɒm.prɪˈhen.sɪv

comprehensive

Meaning
Including or dealing with all or nearly all elements or aspects of something; complete and thorough.
Example
A comprehensive study enhances understanding.
C1 noun /ˈkɑr.nɪdʒ/

Carnage

Meaning
the killing of a large number of people; widespread slaughter
Example
The battlefield was filled with carnage after the brutal war.
A2 verb /kəmˈper/

compare

Meaning
to examine similarities and differences between things
Example
I will compare these two products before buying.
B1 verb /kəˈmænd/

command

Meaning
to give an order authoritatively; to control or direct
Example
The general commanded the soldiers to move forward.
B2 noun, verb /kɜːrs/

curse

Meaning
a solemn wish that harm or misfortune should befall someone; a rude or offensive word or phrase; to utter offensive words or wish harm upon someone
Example
He cursed loudly when he realized he had lost his wallet.
B2 noun /ˈkɒŋɡrɛs/

congress

Meaning
a formal meeting or assembly, especially of representatives for discussion
Example
The international congress on climate change will be held next year.
C1 noun /ˈkæzəm/

chasm

Meaning
a deep fissure in the earth's surface or a wide difference between people or ideas
Example
There was a great chasm between the two political parties.
A1 verb, noun /tʃɛk/

check

Meaning
To examine, inspect, or verify something; also a written order to a bank to pay money.
Example
Please check the report before submitting it.
A1 noun /tʃeər/

Chair

Meaning
a separate seat for one person, typically with a back and four legs
Example
Please sit on the chair.
C1 noun /kənˈfɔːrməns/

conformance

Meaning
The act of conforming to a rule, standard, or law.
Example
The product was tested for conformance with safety standards.
C2 noun /ˈkrɛməˌtɔːri/

crematory

Meaning
a place where dead bodies are cremated
Example
The crematory was located near the cemetery.
B1 noun /kənˈsjuːmər/

consumer

Meaning
A person who buys and uses goods and services.
Example
The company focuses on understanding consumer needs.
C2 noun /ˌkæt ə ˈnaɪn ˌteɪlz/

cat-o-nine-tails

Meaning
A whip with nine knotted cords, historically used for punishment.
Example
The sailor feared the cat-o-nine-tails more than the storm at sea.
B2 noun /ˈkʊk.uː/

Cuckoo

Meaning
a bird known for its distinctive call and for laying eggs in other birds' nests
Example
We heard the cuckoo calling from the forest early in the morning.
B2 noun /kɒk/

Cock

Meaning
an adult male chicken
Example
The cock crowed loudly at dawn to wake everyone up.
A2 noun ˌkɒmpəˈtɪʃən

competition

Meaning
The activity or condition of competing; rivalry for supremacy.
Example
Competition grew between language groups.
A2 noun /ˈkændl/

candle

Meaning
a stick of wax with a wick that burns to give light
Example
She lit a candle during the power cut.
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 /kəmˈpliːʃən/

completion

Meaning
the action or process of finishing something
Example
The completion of the project will take another few weeks.
C2 adjective /koʊˈiːvəl/

coeval

Meaning
Having the same age, date of origin, or duration; contemporary.
Example
The philosopher was coeval with the rise of modern science.
B1 noun /ˈklaɪ.mət/

climate

Meaning
The weather conditions prevailing in an area in general.
Example
Climate change impacts all regions globally.
C2 verb /kənˈvoʊk/

convoke

Meaning
to call together or summon a meeting or assembly
Example
The committee convoked an emergency session to discuss the crisis.
B1 noun /ˈsɛrəˌmoʊni/

ceremony

Meaning
A formal event or occasion, often with rituals and traditions.
Example
The graduation ceremony was held in the university hall.
C2 noun /ˌkɛəriˈætɪd/

caryatid

Meaning
A stone carving of a draped female figure, used as a supporting column in architecture.
Example
The ancient temple featured a caryatid holding up the roof.
B2 adjective /ˈklɪn.ɪ.kəl/

clinical

Meaning
Related to the observation and treatment of patients rather than theoretical study.
Example
The doctor conducted a clinical examination.
C2 noun /ˈtʃæm.pæk/

Champak

Meaning
a fragrant yellow or white flower from a tree native to South Asia, used in perfumes and religious ceremonies
Example
The champak tree in the temple courtyard bloomed with golden flowers.
C2 noun /ˌkʌl.pəˈbɪl.ɪ.ti/

culpability

Meaning
responsibility for a fault or wrong; blameworthiness
Example
The jury considered his level of culpability in the crime.
A1 verb /keɪm/

came

Meaning
past tense of 'come'
Example
She came to the party on time.
C1 noun sɜːrˈkeɪdiən ˈrɪðəm

circadian rhythm

Meaning
The body's natural sleep-wake cycle that occurs within 24 hours
Example
Exposure to natural light regulates the circadian rhythm.
C2 adjective /ˈtʃɜːrlɪʃ/

churlish

Meaning
Rude in a mean-spirited and surly way.
Example
It would be churlish to refuse her kind invitation.
B2 verb /ˈkæt.ɪ.ɡə.raɪzd/

categorized

Meaning
Placed in a particular class or group.
Example
The city was categorized as highly polluted.
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.
B1 verb /koʊˈɑːpəreɪt/

cooperate

Meaning
to work together; to collaborate
Example
The teams cooperate to achieve their common goals.
C2 adjective /tʃeɪst/

Chaste

Meaning
pure and morally good; abstaining from sexual activity
Example
She lived a chaste and virtuous life.
C2 verb /kənˈtjuːz/

contuse

Meaning
to bruise by striking or hitting
Example
He contused his arm when he fell off the bike.
C1 noun /kɔːrs flaʊər/

Course flour

Meaning
coarsely ground flour with larger particles, typically used for baking bread
Example
She used course flour to make homemade bread with a rustic texture.
C2 adjective /kəˈrʌp.tə.bəl/

corruptible

Meaning
able to be morally or ethically corrupted
Example
He was known to be corruptible and often accepted bribes.
B2 noun /ˈkɒn.ʃəs.nəs/

consciousness

Meaning
The state of being aware of and able to think about one's existence, sensations, thoughts, and surroundings.
Example
Meditation helps improve consciousness and clarity of thought.
C1 verb /kənˈtraɪv/

contrive

Meaning
to plan or devise cleverly or skillfully
Example
She contrived a clever plan to surprise her friends.
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.
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.
C1 adjective /kənˈtraɪvd/

contrived

Meaning
artificial or forced; not natural or spontaneous
Example
The ending of the movie felt contrived and unrealistic.
C1 noun kənˈfɔː.mə.ti

conformity

Meaning
Compliance with standards, rules, or laws. Behavior in accordance with socially accepted conventions.
Example
Strict conformity to the rules ensures order in society.
B1 noun /ˈkɒtən/

cotton

Meaning
A soft white fibrous substance used to make cloth and thread.
Example
This shirt is made of pure cotton.
B1 noun /kənˌsɪdəˈreɪʃən/

consideration

Meaning
careful thought or attention to something before making a decision
Example
After much consideration, she accepted the job offer.
B2 adjective kənˈven.ʃən.əl

conventional

Meaning
Based on or in accordance with what is generally done or believed; traditional, standard, customary.
Example
Many farmers still use conventional farming methods.
C2 noun /ˈʃɛvrən/

chevron

Meaning
A V-shaped pattern, often used in military insignia or design.
Example
The sergeant’s uniform displayed three chevrons on the sleeve.
B1 noun /ˈkaʊn.səl/

council

Meaning
an assembly of people chosen or elected to make decisions or advise on matters
Example
The city council voted to improve public transportation.
C2 noun /ʃəˈɡrɪn/

chagrin

Meaning
Distress or embarrassment at having failed or been humiliated.
Example
She left the room in chagrin after forgetting her lines.
C2 noun /ˈkoʊdə/

coda

Meaning
the concluding passage of a piece of music or a literary work
Example
The novel ends with a reflective coda that ties up the themes.
B2 noun /kloʊv/

Clove

Meaning
aromatic flower buds of a tree in the family Myrtaceae, used as a spice
Example
She added a few cloves to the mulled wine for extra flavor.
C1 verb/noun /ˈkrɒn.ɪ.kəl/

chronicle

Meaning
To record events in the order in which they happened; a written record of historical events.
Example
She decided to chronicle her journey through a blog.
B1 noun /səˈlɛbrɪti/

celebrity

Meaning
a famous person, especially in entertainment or sports
Example
The celebrity was surrounded by fans at the airport.
C1 adjective, noun /ˈkɔːrpərəl/

corporal

Meaning
relating to the body; a low-ranking officer in the military
Example
He suffered a corporal punishment for his mistake.
B2 adjective /ˈkʌltʃəd/

cultured

Meaning
characterized by refined taste, manners, and education
Example
She is a cultured woman who loves art and literature.
B2 verb /kənˈfɜːr/

confer

Meaning
to discuss something important or to grant or bestow something
Example
The committee will confer to decide on the new policy.
B2 verb /kənˈfaɪd/

confide

Meaning
To tell someone about a secret or private matter while trusting them not to repeat it.
Example
He confided his worries to his best friend.
B2 noun /kɒt/

Cot

Meaning
a small bed, especially a portable one or one for a baby
Example
The baby sleeps peacefully in her cot.
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 noun/adjective /klɛft/

cleft

Meaning
a split or crack; a space or opening made by cleavage
Example
The goat disappeared into a cleft in the rocks.
C1 adjective /ˈʃɪvəlrəs/

chivalrous

Meaning
Behaving in a courteous, gallant, and honorable way, especially toward women.
Example
He was chivalrous, always opening doors for others.
C2 noun /ˈkoʊ.tə.ri/

coterie

Meaning
a small, exclusive group of people with shared interests
Example
He belonged to a coterie of artists who met every Friday.
A2 noun/verb /ˈsaɪkl/

cycle

Meaning
a series of events that repeat in the same order; or to ride a bicycle
Example
She cycles to school every day.
C2 adjective /ˈkɒnfluənt/

confluent

Meaning
Flowing together or merging; coming together at one point.
Example
The confluent streams formed a mighty river.
B2 noun /ˌkɑm.pənˈseɪ.ʃən/

Compensation

Meaning
something given or received as an equivalent for services, debt, loss, injury, or suffering; payment or reward
Example
The company provided financial compensation to the workers injured in the accident.
C1 adjective ˈkʌm.bə.səm

cumbersome

Meaning
Heavy, unwieldy, difficult to handle or carry.
Example
The cumbersome luggage slowed him down.
A2 adjective /kənˈfjuːzd/

confused

Meaning
unable to think clearly; uncertain or puzzled
Example
She felt confused by the complicated instructions.
C2 noun /kəˈliːdʒən/

collegian

Meaning
a student of a college
Example
The collegians were preparing for the cultural festival.
B2 verb /ˌkɒmprɪˈhɛnd/

comprehend

Meaning
to understand or grasp the meaning of something
Example
It is difficult to comprehend the scale of the disaster.
C1 verb /ˌkɒm.pɑːtˈmen.təl.aɪz/

compartmentalize

Meaning
To divide into sections or categories; to separate things into compartments.
Example
To increase efficiency, he compartmentalized his work tasks.
B1 noun /ˈkɛmɪstri/

chemistry

Meaning
the branch of science that studies substances and their interactions; also the emotional connection between people
Example
They have great chemistry and work well together.
C2 noun /ˌkəʊ.əˈles.əns/

coalescence

Meaning
The process of coming together to form one mass or whole.
Example
The coalescence of different cultures creates diversity.
C2 adjective /ˌkloʊs ˈhɔːld/

close-hauled

Meaning
of a sailing ship, sailing as nearly as possible towards the direction from which the wind is blowing.
Example
The yacht was close-hauled as it cut through the waves.
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.
C2 noun /ˈtʃaɪ.nə roʊz/

China-rose

Meaning
a tropical flowering plant with large, showy flowers in various colors
Example
The bright red China-rose flowers decorated the entrance of the house.
C2 adjective /ˈkʌvətəs/

covetous

Meaning
having or showing a strong desire for someone else's possessions
Example
She gave him a covetous look when he showed his new watch.
A2 noun, verb /tʃɪp/

chip

Meaning
A small piece broken off from something; or to cut or break a small piece from something.
Example
He accidentally chipped the edge of the table.
B1 noun /ˈkɒstjuːm/

costume

Meaning
a set of clothes worn to represent a particular character, culture, or occasion
Example
She wore a beautiful costume for the Halloween party.
C2 noun /krəˈnɒmɪtər/

chronometer

Meaning
An instrument for measuring time precisely, especially used in navigation.
Example
The sailor relied on the chronometer to determine his position at sea.
C1 noun /ˈsɪtəˌdɛl/

citadel

Meaning
A fortress protecting or dominating a city.
Example
The ancient citadel stood guard over the town for centuries.
C1 verb /klæsp/

clasp

Meaning
to grasp or hold tightly; also a device for fastening
Example
She clasped her hands together in prayer.
B2 adjective ˈkɒɡnɪtɪv

cognitive

Meaning
Related to mental processes of perception, memory, judgment, and reasoning.
Example
Cognitive functions improve with practice and learning.
B2 adverb /ˈtʃiːfli/

chiefly

Meaning
mainly; primarily
Example
The festival is celebrated chiefly by young people.
C1 verb /kəˈluːd/

collude

Meaning
To secretly cooperate or conspire with others, often for a deceitful purpose.
Example
The two companies colluded to fix prices in the market.
C1 noun /ˈkæn.dɚ/

candor

Meaning
The quality of being open, honest, and straightforward in speech or expression.
Example
She spoke with candor about the challenges she faced.
C2 adjective /kəˈmɛnʃərət/

commensurate

Meaning
corresponding in size, degree, or extent; proportionate
Example
Salary will be commensurate with experience.
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.
C1 verb /kəmˈprɛs/

compress

Meaning
to press or squeeze something so that it becomes smaller
Example
The file was compressed to save storage space.
C1 adjective ˌkɑːr.sɪ.nəˈdʒen.ɪk

carcinogenic

Meaning
Having the potential to cause cancer in living tissue.
Example
Processed meat contains carcinogenic compounds.
A2 noun/verb /ˈkɒntækt/

contact

Meaning
Communication or connection with someone.
Example
You should contact your doctor if symptoms persist.
B2 noun /kəmˈplaɪ.əns/

compliance

Meaning
The practice of conforming to rules, regulations, or laws; obedience to orders or instructions.
Example
Schools expect compliance with their rules and policies.
B2 adjective ˌkɒn.trəˈvɜː.ʃəl

controversial

Meaning
Giving rise to public disagreement or heated discussion.
Example
The policy remains controversial.
C1 noun /kʌˈstoʊ.di.ən/

Custodian

Meaning
a person who has responsibility for or looks after something; a caretaker or guardian
Example
The school custodian ensures that all buildings are clean and secure.
B1 noun ˈtʃɑː.dʒɪŋ

charging

Meaning
The process of supplying electrical energy to recharge a battery or power source.
Example
Electric vehicle charging stations are increasing in cities.
A2 noun /ˈkrɒk.ə.daɪl/

Crocodile

Meaning
a large reptile with a long mouth and sharp teeth that lives in rivers and lakes in hot countries
Example
The crocodile slowly moved through the murky water.
C2 noun /kæd/

Cad

Meaning
a man who behaves dishonorably, especially toward women
Example
Everyone at the party avoided him because he was known to be a cad.
B2 noun /kənˈsɛnt/

consent

Meaning
permission for something to happen or agreement to do something
Example
She gave her consent before the operation.
C2 adjective /krəˈmætɪk/

chromatic

Meaning
Relating to colors or, in music, notes outside the standard scale.
Example
The artist used a chromatic palette to create vibrant contrasts.
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 noun /ˈklaɪ.mæks/

Climax

Meaning
the most intense, exciting, or important point of something; the highest or most intense point in a process
Example
The movie reached its climax during the final battle scene.
C1 noun /ˈkɑːmənˌwɛlθ/

commonwealth

Meaning
an independent community or state, especially one founded for the common good; also an association of nations
Example
Australia is a member of the Commonwealth of Nations.
C1 noun /kuːp/

coop

Meaning
a small enclosure or cage for chickens or other birds
Example
The farmer checked the chickens in the coop every morning.
C1 noun kənˈsɔː.ti.əm

consortium

Meaning
An association of several companies or organizations formed to undertake an enterprise beyond the resources of any one member.
Example
The consortium worked collaboratively to build the cable.