Cockroach
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B2 noun /ˈkɒk.roʊtʃ/

Cockroach

Meaning
a flat brown insect that is commonly found in kitchens and other warm places
Example
A cockroach ran across the kitchen floor quickly.
C2 noun /kiˌɑːrəˈskjʊəroʊ/

chiaroscuro

Meaning
The use of strong contrasts between light and dark in art or literature to create a dramatic effect.
Example
The artist's painting used chiaroscuro to highlight the figure's face.
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.
C2 verb /kənˈvʌls/

convulse

Meaning
to shake violently; to suffer sudden involuntary contractions
Example
The patient convulsed during the seizure.
C2 noun /ˌkɒzməˈpɒlɪtənɪzəm/

cosmopolitanism

Meaning
the ideology that all human beings belong to a single community
Example
Cosmopolitanism promotes respect and understanding across cultures.
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.
A1 verb /kɔːst/

cost

Meaning
to have a price of; to require payment; to cause loss
Example
This book will cost twenty dollars.
C2 noun /ˈkɒl.ə.kwi/

colloquy

Meaning
A formal conversation or dialogue, often on serious or academic topics.
Example
The professors engaged in a deep colloquy about the future of education.
C2 noun /ˈklaɪmɪŋ fɪʃ/

Climbing-fish

Meaning
a type of fish that can climb trees and survive out of water for short periods
Example
The climbing-fish can move from one pond to another by climbing trees.
B2 noun ˌkɒn.ekˈtɪv.ɪ.ti

connectivity

Meaning
The state of being connected or interconnected; the capacity for the interconnection of platforms, systems, and applications.
Example
Improved connectivity boosts economic development.
B1 noun ˌkɒnsənˈtreɪʃən

concentration

Meaning
The action or power of focusing one's attention or mental effort on a particular object or activity
Example
Concentration is key to mastering any skill.
C1 noun ˈkɒnfluəns

confluence

Meaning
An act or process of merging.
Example
The confluence of ideas from different cultures created a rich discussion.
B1 noun /koʊm/

Comb

Meaning
a toothed device for arranging or cleaning the hair
Example
She used a comb to style her hair before the party.
C2 adjective /ˈkoʊltɪʃ/

coltish

Meaning
Playful, energetic, and not fully mature or disciplined.
Example
The coltish boy ran around the field without a care.
C1 adjective /ˈtʃɛkərd/

chequered

Meaning
Having a pattern of squares, or marked by varied and contrasting experiences or periods.
Example
He had a chequered career with both great successes and failures.
A2 noun /keɪdʒ/

Cage

Meaning
a structure with bars or wire for keeping birds or animals
Example
The parrot lives in a large cage.
B1 verb kleɪmz

claims

Meaning
To take someone's life, to cause death
Example
Workplace pollution claims thousands of lives annually.
C1 adjective /kənˈdʒenɪtl/

congenital

Meaning
existing from birth, usually describing a disease or condition
Example
The child was born with a congenital heart defect.
B2 noun/verb /ˈtʃɑːrtər/

charter

Meaning
a written document granting rights or privileges; to hire a vehicle or vessel for temporary use
Example
The company decided to charter a bus for the trip.
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.
A2 noun/verb /ˈkɒntækt/

contact

Meaning
Communication or connection with someone.
Example
You should contact your doctor if symptoms persist.
C1 noun /ˈtʃæriət/

Chariot

Meaning
an ancient horse-drawn vehicle used in warfare and racing
Example
The warrior rode his chariot into battle with great courage.
C1 adjective /ˈkɔː.stɪk/

caustic

Meaning
able to burn or corrode by chemical action; severely sarcastic
Example
Her caustic remarks hurt his feelings.
C2 adjective /kəˈmɛnʃərət/

commensurate

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

clamber

Meaning
to climb with effort or difficulty, often using both hands and feet
Example
The children clambered over the rocks to reach the cave.
C1 adjective /ˌkævəˈlɪər/

cavalier

Meaning
showing a lack of proper concern; dismissive or offhand
Example
He had a cavalier attitude toward safety regulations.
B2 noun /ˈsɛmɪˌtɛri/

cemetery

Meaning
a place where dead people are buried
Example
The old cemetery is located at the edge of the village.
C1 adjective /ˈkrɪm.zən/

Crimson

Meaning
a deep purplish-red color
Example
The crimson sunset painted the sky with beautiful shades.
C2 noun /ˌkæl.sɪ.fɪˈkeɪ.ʃən/

calcification

Meaning
The process of calcium accumulation in soil, making it hard.
Example
Calcification reduces soil permeability and affects crop growth.
B2 verb /klæʃ/

clash

Meaning
to come into conflict or collision with something or someone.
Example
The two cars clashed in the intersection.
C2 noun /ˈkæm.fər/

Camphor

Meaning
a white crystalline substance with a strong aromatic smell, used in medicine and religious ceremonies
Example
The temple was filled with the fragrant smoke of burning camphor.
A2 noun /ˈkælɪndər/

calendar

Meaning
a system for organizing days, months, and years; a chart showing days of the year
Example
She marked her birthday on the calendar.
B2 noun /ˈkoʊ.brə/

Cobra

Meaning
a venomous snake with a hood that can be spread when threatened
Example
The cobra raised its hood and hissed at the intruder.
C1 verb /ˈkʌn.dʒər/

conjure

Meaning
to summon something as if by magic; to imagine vividly
Example
The magician conjured a rabbit out of the hat.
A2 verb /kənˈtɪnjuː/

continue

Meaning
To keep happening, existing, or doing something without stopping.
Example
The rain will continue throughout the night.
C2 adjective /ˈkɒr.ə.ɡeɪ.tɪd/

corrugated

Meaning
shaped into ridges and grooves; wrinkled or folded
Example
The roof was made of corrugated metal sheets.
B2 adjective /kəˈrɛspɒndɪŋ/

corresponding

Meaning
matching or related to something
Example
The corresponding page in the book explains the process in detail.
C2 adjective /ˈkɒndaɪn/

condign

Meaning
deserved, appropriate, and fitting (especially punishment)
Example
The criminal received condign punishment for his crimes.
C1 adjective /ˈkʌlpəbl̩/

culpable

Meaning
deserving blame or responsibility for a wrongdoing
Example
The judge found him culpable for the accident.
B1 noun /ˈsɪtɪzənʃɪp/

citizenship

Meaning
the status of being a recognized member of a state or country, with rights and duties
Example
He applied for American citizenship after living there for ten years.
B2 noun /ˈkɒnsənənt/

consonant

Meaning
A speech sound produced by blocking air flow, or a letter representing such a sound.
Example
The word 'cat' has two consonants and one vowel.
C1 noun, verb /kriːs/

crease

Meaning
a line or fold produced on paper, cloth, or other material; to make a fold or wrinkle
Example
She ironed the shirt carefully to remove every crease.
B1 adjective /ˈklæsɪkəl/

classical

Meaning
relating to ancient Greek or Roman culture, or representing traditional excellence in art, music, or literature
Example
She loves listening to classical music while studying.
B1 noun /ˈkɒntɛkst/

context

Meaning
the circumstances or background relevant to an event, statement, or idea
Example
To understand the quote, you need to know the context in which it was said.
B2 verb /koʊp/

cope

Meaning
to deal effectively with something difficult
Example
She had to cope with a lot of pressure at work.
B1 noun /ˈtʃiːtər/

cheater

Meaning
a person who cheats or acts dishonestly to gain an advantage
Example
He was caught and labeled as a cheater during the exam.
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.
B1 verb /klæp/

clap

Meaning
To strike the palms of the hands together, usually to express approval or create a sharp sound.
Example
The audience began to clap loudly after the performance.
C2 noun /ˈkɒŋ.ɡru.əns/

congruence

Meaning
Harmony, compatibility and agreement between different elements.
Example
The congruence between their ideas made collaboration easy.
B2 noun /ˈkɒmjʊnɪst/

communist

Meaning
a person who supports or believes in the principles of communism
Example
The communist ideology aims for a classless society.
A2 verb /ˈkʌv.ərd/

covered

Meaning
Protected by being placed over or wrapped; hidden from view.
Example
The forest is covered in greenery.
C1 verb /kəˈmɛmɔˌreɪt/

commemorate

Meaning
To honor and remember someone or something through a ceremony or action.
Example
The statue was built to commemorate the fallen heroes.
B2 noun /ˈkɒm.ɪt/

Comet

Meaning
a celestial object consisting of ice and dust that develops a tail when approaching the sun
Example
Halley's Comet appears in the sky every 76 years.
B2 noun /ˌkɔr.əˈspɑn.dəns/

Correspondence

Meaning
letters sent or received; similarity or equivalence; communication by exchange of letters
Example
The historical correspondence between the two famous writers was recently published.
B2 adjective ˌkɒntrəˈdɪktəri

contradictory

Meaning
Mutually opposed or inconsistent; containing elements that oppose each other.
Example
Their views on education are contradictory.
A1 verb /kætʃ/

catch

Meaning
to grab something that is moving; to get a disease; to understand
Example
Can you catch the ball I'm throwing?
B2 noun /ˈkæriər/

carrier

Meaning
A person or thing that carries, transports, or conveys something; also an organization that provides transport services.
Example
The airline is the largest carrier in the country.
B2 adverb /ˈkæʒ.u.ə.li/

Casually

Meaning
in a relaxed and informal way; without much thought or preparation
Example
He casually mentioned that he was leaving.
B2 noun /kəˈmiː.li.ən/

Chameleon

Meaning
a lizard that can change color to match its surroundings
Example
The chameleon changed its color from green to brown.
B2 noun /kənˈsɛnt/

consent

Meaning
permission for something to happen or agreement to do something
Example
She gave her consent before the operation.
A2 verb /ˈkænsəl/

cancel

Meaning
to decide that something planned will not take place
Example
The flight was canceled due to heavy rain.
A1 verb /kʌm/

come

Meaning
to move toward a place; to arrive at a place
Example
Please come to my birthday party.
B2 noun /kɔːrd/

cord

Meaning
a long, thin, flexible string or rope
Example
He tied the package with a strong cord.
A2 noun, verb /kɒf/

cough

Meaning
a sudden noisy release of air from the lungs to clear the throat or airway; to expel air suddenly from the lungs with a cough
Example
He has a bad cough and stayed home today.
C2 noun /kɒɡˈnoʊmən/

cognomen

Meaning
A family name or surname; an additional name or nickname.
Example
His cognomen became widely known in literary circles.
B2 noun /ˈsɜːr.tən.ti/

Certainty

Meaning
firm conviction that something is the case; the quality of being reliably true
Example
We can say with certainty that the project will be completed on time.
C2 adjective /tʃəˈruːbɪk/

cherubic

Meaning
Innocent, sweet, and angelic, like a cherub.
Example
The baby had a cherubic smile that melted everyone’s heart.
C1 verb /koʊˈhæbɪt/

cohabit

Meaning
To live together, often as partners without being married.
Example
They decided to cohabit before getting married.
A2 verb /klaɪm/

climb

Meaning
to go up using hands and feet; to ascend
Example
We decided to climb the mountain.
C2 noun /ˈsɛʃən/

cession

Meaning
The formal giving up of rights, property, or territory, especially by a state.
Example
The treaty resulted in the cession of land to the neighboring country.
A2 noun /ˈkjuː.kʌm.bər/

Cucumber

Meaning
a long green vegetable with watery flesh, eaten raw in salads or cooked
Example
I added fresh cucumber slices to my salad.
A2 noun, adjective /ˈkrɪstʃən/

christian

Meaning
a person who follows the religion based on the teachings of Jesus Christ
Example
She is a devoted Christian who attends church every Sunday.
C2 noun, adjective /klɛərˈvɔɪənt/

clairvoyant

Meaning
a person who claims to have clairvoyance; having the ability to see beyond normal senses
Example
The clairvoyant predicted that she would travel abroad soon.
B2 noun /ˈkaʊnsɪlər/

councilor

Meaning
an elected member of a council, especially a local government body
Example
The councilor held a public meeting to discuss local issues.
B2 noun /kəʊˌɔːdɪˈneɪʃən/

coordination

Meaning
the process of organizing different elements to work together effectively
Example
The coordination between the teams was flawless.
B1 verb /ˈkrɪtɪsaɪz/

criticize

Meaning
to express disapproval or find fault with someone or something
Example
The teacher criticized the student's poor handwriting.
B1 adjective /ˈkəʊstəl/

coastal

Meaning
relating to or near a coast or shoreline
Example
They built a resort in a coastal area.
C2 adjective /kənˈvɜːrsənt/

conversant

Meaning
familiar with or knowledgeable about something
Example
She is conversant with the latest developments in technology.
B2 adjective /ˈsɛl.əˌbreɪ.tɪd/

celebrated

Meaning
Widely known and praised; famous for an achievement.
Example
He is a celebrated author in the field of literature.
C2 verb /ˈkɒndʒʊɡeɪt/

conjugate

Meaning
to list the different forms of a verb according to tense, person, and number
Example
Students are asked to conjugate the verb 'to be'.
B2 noun /ˈtʃɪk piː/

Chick pea

Meaning
round beige legume; protein-rich pulse used in various dishes
Example
Soak the chick peas overnight before cooking them for better digestion.
A2 noun /keɪs/

case

Meaning
A particular situation, occurrence, or an instance of something; also a container or covering for something.
Example
In this case, we should wait for further instructions.
C1 adjective sɪˈlɛstʃəl

celestial

Meaning
Positioned in or relating to the sky, or outer space as observed in astronomy.
Example
The celestial bodies in the sky were clearly visible last night.
C2 noun /ˈkɒmɪti/

comity

Meaning
Courtesy and considerate behavior towards others; mutual respect.
Example
The meeting was conducted with comity and respect.
B1 noun /krɒp/

crop

Meaning
plants that are grown and harvested for food or other use
Example
The farmers harvested their rice crop in autumn.
B2 verb /ˈkæt.ɪ.ɡə.raɪzd/

categorized

Meaning
Placed in a particular class or group.
Example
The city was categorized as highly polluted.
C1 noun /ˈkriː.dəns/

credence

Meaning
belief in or acceptance of something as true
Example
The witness gave credence to the defendant's alibi.
C1 noun /ˈkætərækt/

cataract

Meaning
A medical condition causing clouding of the eye's lens; also a large waterfall.
Example
The old man suffered from cataracts in both eyes.
C1 noun /ˈʃoʊ.vəˌnɪz.əm/

chauvinism

Meaning
Excessive or prejudiced support for one's own cause, group, or gender, often with contempt for others.
Example
The company's culture was criticized for promoting male chauvinism.
C1 noun ˌkɒm.pjʊˈteɪ.ʃən

computation

Meaning
The action of mathematical calculation.
Example
Complex computation is required for AI models.
C1 verb koʊˈɜrs

coerce

Meaning
To force someone to do something against their will using threats or intimidation.
Example
The manager tried to coerce the employees into working overtime.
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.
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.
C2 noun /ˈkærəˌpeɪs/

carapace

Meaning
the hard shell covering the back of some animals like turtles and crabs
Example
The turtle withdrew into its carapace for protection.
A1 verb /keɪm/

came

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

contender

Meaning
a person or team competing for a title or prize
Example
She is a strong contender for the mayoral position.
C1 verb /ˈkɒnskrɪpt/

conscript

Meaning
to force someone into military service
Example
The government conscripted young men during the war.
B1 noun /kəˌmjunɪˈkeɪʃən/

communication

Meaning
The act or process of using words, sounds, signs, or behaviors to express or exchange information or to express your ideas, thoughts, feelings, etc.
Example
Effective communication is crucial for any successful project.
B1 noun /kənˈsʌltənt/

consultant

Meaning
A professional who provides expert advice in a particular area.
Example
The company hired a consultant to improve its marketing strategy.
C1 noun /ˈkɒnfɪdænt/

confidant

Meaning
A person with whom one shares a secret or private matter, trusting them not to repeat it.
Example
She found a true confidant in her childhood friend.
C1 noun /ˈkɒntrəbænd/

contraband

Meaning
goods that are illegal to import, export, or possess
Example
The police seized a shipment of contraband cigarettes.
B2 adjective /ˌkrɒnəˈlɒdʒɪkəl/

chronological

Meaning
Arranged in the order in which events happened.
Example
The events were listed in chronological order.
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.
A2 adjective /ˈtʃɪə.fəl/

Cheerful

Meaning
happy and optimistic; full of joy and good spirits; bright and lively
Example
She has a cheerful personality that brightens everyone's day.
B1 noun /ˌkɒmpəˈzɪʃən/

composition

Meaning
the act of creating a piece of writing, music, or art; the way parts are arranged
Example
Her composition won first prize in the contest.
C2 adjective /kəˈrɛlətɪv/

correlative

Meaning
having a mutual relationship; corresponding
Example
The increase in temperature is correlative with the melting of glaciers.
B2 verb /ˈklæsɪfaɪ/

classify

Meaning
to arrange or organize into categories or groups
Example
The librarian classified the books by subject.
B1 adjective /ˈkæʒ.u.əl/

Casual

Meaning
relaxed and unconcerned; happening by chance; informal
Example
He wore casual clothes to the party.
C2 noun /ˈkɒnsənəns/

consonance

Meaning
Agreement or harmony among parts; a pleasing combination of sounds in music or words.
Example
The consonance between their ideas made the project successful.
B2 adjective /ˌkɒm.plɪˈmen.tər.i/

Complimentary

Meaning
expressing praise or admiration; given or supplied free of charge as a courtesy
Example
The hotel offers complimentary breakfast for all guests.
B1 noun /kræb/

Crab

Meaning
a crustacean with a broad carapace, stalked eyes, and five pairs of legs, the first pair of which are modified as pincers
Example
The crab scuttled sideways across the sand.
C2 noun/verb /ˈkætˌkɔːl/

catcall

Meaning
A loud whistle or shout of disapproval or sexual harassment directed at someone.
Example
The actress ignored the catcalls from the crowd.
C2 noun /ˈkɒnsəvəˌtwɑː/

conservatoire

Meaning
A school specializing in the study of music or drama.
Example
She trained as a pianist at the Paris Conservatoire.
C1 adjective /kəmˈpleɪsənt/

complacent

Meaning
showing self-satisfaction and a lack of concern about potential dangers or problems
Example
The team grew complacent after a few victories and stopped practicing hard.
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.
B2 adjective ˌkɒn.stɪˈtjuː.ʃən.əl

constitutional

Meaning
Relating to an established set of principles governing a state; in accordance with a political constitution.
Example
Constitutional reforms ensure fairness in the system.
C1 adjective /ˈkæl.əs/

Callous

Meaning
showing or having an insensitive and cruel disregard for others; emotionally hardened
Example
He showed a callous disregard for others' feelings.
C1 noun /ʃæˈtoʊ/

chateau

Meaning
a large French country house or castle
Example
They stayed in a beautiful chateau in France.
C1 noun ˈkɔː.pəs

corpus

Meaning
A large collection of linguistic data used for language analysis and research.
Example
Linguists use a corpus to analyze language patterns.
C1 noun /krʌtʃ/

crutch

Meaning
a support used by someone injured to walk; also something relied upon for support or help
Example
He had to use crutches after breaking his leg.
C1 verb /krɪndʒ/

cringe

Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.