calculus
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C1 noun /ˈkælkjʊləs/

calculus

Meaning
A branch of mathematics concerned with rates of change and accumulation; also a hard mineral deposit in the body such as on teeth.
Example
Calculus is essential for advanced studies in physics and engineering.
C2 noun kəmˈpʌŋk.ʃən

compunction

Meaning
A feeling of guilt or moral scruple that prevents or follows the doing of something bad.
Example
He felt compunction after lying to his friend.
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.
C2 noun /ˈkɒn.tɪ.nəns/

continence

Meaning
self-restraint, especially regarding bodily functions or desires
Example
He practiced continence to maintain focus on his studies.
B2 verb /ˈkɒm.plɪ.keɪt/

complicate

Meaning
To make something more difficult or confusing.
Example
The new rules will only complicate the process.
B2 adjective /ˈkɜːrtiəs/

courteous

Meaning
polite, respectful, or considerate in manner
Example
The staff at the hotel were very courteous to all guests.
B2 adjective + noun kriˈeɪtɪv ɪɡˈzɪbɪts

creative exhibits

Meaning
Artistic displays or presentations that show originality and imagination.
Example
The creative exhibits highlighted recycling possibilities.
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.
C1 noun /ˌkɒnfləˈɡreɪʃən/

conflagaration

Meaning
This is a common misspelling of 'conflagration', which means a large, destructive fire.
Example
The term 'conflagaration' is often incorrectly used instead of 'conflagration'.
C2 noun /klɛərˈvɔɪəns/

clairvoyance

Meaning
the supposed ability to perceive events beyond normal sensory contact; psychic insight
Example
She claimed to have clairvoyance and predicted the future.
C2 verb /kɒnˈkætəneɪt/

concatenate

Meaning
To link things together in a series or chain.
Example
The program concatenates two strings into one.
B1 noun /kəˈrɛkʃən/

correction

Meaning
the action or process of correcting something
Example
The teacher made a correction to the student's essay.
C2 noun /tʃɜːrl/

churl

Meaning
A rude, boorish, or ill-mannered person.
Example
The waiter was such a churl that customers left unhappy.
B2 noun /kəmˈplɛksɪti/

complexity

Meaning
The state of being complex; intricacy.
Example
The complexity of the problem required a team of experts.
C1 verb /kəmˈprɛs/

compress

Meaning
to press or squeeze something so that it becomes smaller
Example
The file was compressed to save storage space.
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.
C1 adjective /ˈtʃɛk.ərd/

checkered

Meaning
Having a pattern of alternating squares of different colors; also describing a past full of ups and downs or varied experiences.
Example
He had a checkered career with many highs and lows.
C1 noun /koʊlt/

Colt

Meaning
a young male horse, especially one under four years old
Example
The farmer trained the young colt to accept a saddle.
C1 adjective /kənˈsɜːrtɪd/

concerted

Meaning
done with great effort, planned and performed together by multiple people
Example
The workers made a concerted effort to improve conditions.
A2 noun /ˈkʌm.pə.ni/

company

Meaning
a business organization; the presence of other people
Example
She started her own company to sell handmade products.
B2 verb /ˈkɑːmpənseɪt/

compensate

Meaning
to give something to make up for loss or damage; to counterbalance
Example
The company will compensate employees for overtime work.
C2 adjective /ˈkælkjʊləbl/

calculable

Meaning
Capable of being calculated, estimated, or measured.
Example
The risk involved in the project is calculable.
A2 noun; verb /tʃæt/

chat

Meaning
an informal conversation; to talk in a friendly, informal way
Example
We had a long chat after dinner.
B2 noun /kəˈlɪʒ.ən/

Collision

Meaning
an instance of one moving object hitting violently against another; a conflict of opposing ideas or interests
Example
The collision between two cars caused a major traffic jam.
B2 adjective /ˌkɑː.di.əʊˈvæs.kjʊ.lər/

cardiovascular

Meaning
Relating to the heart and blood vessels.
Example
Regular exercise improves cardiovascular health.
A2 adjective /ˈsɛntrəl/

central

Meaning
Situated in the middle; of the greatest importance.
Example
Water is central to human survival.
C1 verb /kənˈstrɪkt/

constrict

Meaning
to make narrower or tighter; to shrink or compress
Example
The snake constricted its prey before swallowing.
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 noun /ˈkɔːkəs/

caucus

Meaning
A meeting of members of a political party to select candidates or decide policy.
Example
The party held a caucus to nominate their candidate for president.
B2 noun /kəˈlɛstərɒl/

cholesterol

Meaning
a fatty substance found in the blood, high levels of which can cause health problems
Example
High cholesterol can increase the risk of heart disease.
B1 noun /ˈkær.ə.væn/

Caravan

Meaning
a group of people traveling together, especially through desert areas
Example
The merchant caravan crossed the desert with camels carrying precious goods.
C2 noun /ˈkɒŋ.ɡru.əns/

congruence

Meaning
Harmony, compatibility and agreement between different elements.
Example
The congruence between their ideas made collaboration easy.
C2 noun /ˈklævɪkəl/

clavicle

Meaning
the collarbone, a long bone that serves as a strut between the shoulder blade and the sternum
Example
He fractured his clavicle in the accident.
B1 noun /kənˈviː.ni.əns/

Convenience

Meaning
the state of being able to proceed with something without difficulty; a thing that contributes to an easy way of life
Example
The convenience of online shopping has changed how people buy products.
B1 noun /tʃɪn/

Chin

Meaning
the protruding part of the face below the mouth, formed by the apex of the lower jaw
Example
He stroked his beard thoughtfully, resting his hand on his chin.
B2 verb /ˈkɒnvɪkt/

convict

Meaning
to find someone guilty of a crime in a court of law
Example
The court convicted him of theft.
C2 noun ˌsaɪ.bəˈnet.ɪks

cybernetics

Meaning
The science of communications and automatic control systems in both machines and living things.
Example
Cybernetics plays a crucial role in artificial intelligence.
C2 noun /ˈkeɪ.nə.naɪt/

canaanite

Meaning
a member of a people who lived in the ancient land of Canaan in the Middle East
Example
The Canaanites were known for their advanced trade networks.
C2 noun /tʃəˈmeɪ.li/

Chameli

Meaning
a variety of jasmine flower with small white fragrant petals
Example
The chameli flowers are commonly used to make garlands and perfumes.
C1 noun /kənˈtɪn.dʒən.si/

contingency

Meaning
A provision for an unforeseen event or circumstance, especially in financial planning.
Example
The company has a contingency plan for economic downturns.
C2 noun /sɛnˈtjʊəriən/

centurion

Meaning
A commander of a unit of one hundred soldiers in the ancient Roman army.
Example
The centurion led his men into battle with courage.
B2 noun /kənˈfɛʃən/

confession

Meaning
a statement admitting that one is guilty of a crime or has done something wrong
Example
The suspect made a full confession to the police.
A2 noun /ˈsɪnəmə/

cinema

Meaning
a place where films are shown to the public; the art or industry of making and showing films
Example
We went to the cinema to watch a new movie.
C2 noun ˈkɑː.dərz

cadres

Meaning
A small group of people specially trained for a particular purpose or profession; a group of activists in a communist or other political organization.
Example
There are 26 cadres under BPSC.
C2 verb /kənˈdʒɔɪn/

conjoin

Meaning
to join together or unite; to combine
Example
The two rivers conjoin just before reaching the sea.
C2 noun /kənˈsaɪnər/

consignor

Meaning
a person or company that sends goods to be sold or transported
Example
The consignor shipped the goods to the warehouse.
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.
C1 noun /ˈkæv.əl.ri/

Cavalry

Meaning
soldiers who fight on horseback; the part of an army formerly composed of troops on horseback
Example
The cavalry charged across the field with great speed.
C2 noun /ˈkreɪniəm/

cranium

Meaning
the skull, especially the part enclosing the brain
Example
The archaeologists carefully examined the ancient cranium.
B2 noun /ˈkæs.ər.oʊl bɑːks/

Casserole box

Meaning
a covered dish used for cooking and serving food, especially baked dishes
Example
The casserole box kept the food warm during the dinner party.
C1 noun /kɑːrˈtɒɡrəfi/

cartography

Meaning
The science or practice of drawing maps.
Example
She studied cartography at university to learn how to design maps.
B2 noun /kənˈstreɪnt/

constraint

Meaning
a limitation or restriction
Example
Time is the biggest constraint in completing the project.
C2 verb /kɔːk/

caulk

Meaning
to seal a crack or gap with a waterproof filler
Example
He caulked the window frames to stop the draft.
C1 verb /krɪndʒ/

cringe

Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.
B2 verb /ˌkɒn.trəˈdɪkt/

contradict

Meaning
to say or show the opposite of something that has been said or believed
Example
His actions contradict his words.
B1 noun /kæˈʃɪər/

Cashier

Meaning
a person who handles payments and transactions in a store or bank
Example
The cashier scanned all the items and calculated the total bill.
C1 verb /kliːv/

cleave

Meaning
to split or divide; to cut through forcefully
Example
He used an axe to cleave the wood.
A2 verb kriˈeɪt

create

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

correct

Meaning
free from error; accurate
Example
The answer she gave was correct.
B2 verb /kənˈveɪ/

convey

Meaning
To communicate or make known; to transport or carry from one place to another.
Example
The teacher conveys the lesson clearly to students.
C2 verb /ˈkævəl/

cavil

Meaning
to make petty or unnecessary objections
Example
She caviled at every detail of the plan.
B2 noun ˈkæp.sjuːl

capsule

Meaning
A small soluble case of gelatin containing a dose of medicine, swallowed whole.
Example
Capsules contain controlled environments.
C1 noun /kəˈnʌn.drəm/

conundrum

Meaning
A complex problem or puzzle without an easy solution
Example
The ethical conundrum puzzled the researchers.
C1 adjective ˈklaɪ.mət rɪˈzɪl.i.ənt

climate-resilient

Meaning
Able to cope with the adverse effects of climate change; sustainable and adaptable.
Example
Climate-resilient crops can survive extreme weather conditions.
B1 noun /ˈkɑn.fɪ.dəns/

Confidence

Meaning
the feeling or belief that one can rely on someone or something; firm trust; self-assurance
Example
She spoke with great confidence during the job interview.
B2 noun ˈsɜːrkjələr ɪˈkɒnəmi

circular economy

Meaning
An economic system aimed at eliminating waste and the continual use of resources through reuse, sharing, repair, refurbishment, remanufacturing and recycling.
Example
Adopting a circular economy can reduce waste.
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.
C2 adjective /ˌkæləˈrɪfɪk/

calorific

Meaning
Relating to the amount of energy contained in food or fuel.
Example
Chocolate is highly calorific, so it should be eaten in moderation.
C1 noun /səˈvɪləti/

civility

Meaning
Polite and courteous behavior.
Example
He treated his opponent with civility despite their differences.
C1 verb /klɪntʃ/

clinch

Meaning
To secure or settle something decisively; to grasp tightly.
Example
The team clinched the championship with a last-minute goal.
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.
B2 verb /ˈklærɪfaɪ/

clarify

Meaning
to make clear; to explain more clearly
Example
The teacher clarifies the difficult concept.
C2 adjective /ˈkɒrɪdʒəbl/

corrigible

Meaning
capable of being corrected or improved
Example
The student's mistakes were corrigible with practice.
A2 noun /keɪdʒ/

Cage

Meaning
a structure with bars or wire for keeping birds or animals
Example
The parrot lives in a large cage.
C1 noun /kənˈspɪrə.tər/

conspirator

Meaning
a person who secretly plans with others to do something unlawful or harmful
Example
The conspirator was arrested before the plan could be carried out.
C1 noun /ˌklɔːstrəˈfəʊbiə/

claustrophobia

Meaning
an extreme or irrational fear of being in confined spaces
Example
He avoids elevators because of his claustrophobia.
C2 noun /ˌsɜːrkəmləˈkjuːʃn/

circumlocution

Meaning
the use of many words when fewer would do, especially to avoid stating something directly
Example
The politician's speech was filled with circumlocution.
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.
C1 noun /ˈkɑːrdəməm/

Cardamom

Meaning
aromatic seeds from a plant in the ginger family, used as a spice
Example
The recipe calls for a pinch of ground cardamom.
C1 noun /ˈkændɪdnəs/

candidness

Meaning
The quality of being open, honest, and straightforward
Example
Her candidness during the meeting impressed everyone.
C1 noun /kəˈmoʊʃən/

commotion

Meaning
A state of noisy confusion or disturbance.
Example
The sudden commotion in the market drew everyone's attention.
C2 noun /ˈklɔɪstər/

cloister

Meaning
a covered walk in a convent, monastery, or cathedral, typically with a wall on one side and a colonnade open to a quadrangle on the other.
Example
The monks walked silently through the cloister.
B2 noun ˈkærɪktər dɪˈvɛləpmənt

character development

Meaning
The process of creating a believable character in fiction by giving the character depth and personality.
Example
The character development of Sydney Carton is profound.
C2 verb /ˈsɜːrkəmskraɪb/

circumscribe

Meaning
to limit or restrict something within boundaries
Example
The rules circumscribe the powers of the committee.
C2 noun /ˈkɔːrpəskəl/

corpuscle

Meaning
a small particle or cell, especially a blood cell
Example
Red corpuscles carry oxygen throughout the body.
B1 noun /kəmˈpleɪnt/

complaint

Meaning
a statement that something is wrong or not satisfactory
Example
The manager received a complaint from a customer about poor service.
B1 noun /kriˈeɪ.ʃən/

Creation

Meaning
the action or process of bringing something into existence; something that has been made or invented
Example
The artist's latest creation was displayed at the modern art gallery.
C2 noun /kroʊn/

crone

Meaning
An old woman, often one who is thin and ugly, sometimes associated with witch-like qualities.
Example
The children were scared by the story of the wicked crone in the forest.
A2 noun, verb /kɔɪn/

coin

Meaning
A flat piece of metal used as money; as a verb, to invent a new word or phrase.
Example
The government decided to coin a new term for the program.
C2 noun /ˈkriːdoʊ/

credo

Meaning
A statement of the beliefs or aims that guide someone's actions.
Example
Honesty has always been the central credo of his life.
C1 adjective kənˈkɝː.ənt

concurrent

Meaning
Existing, happening, or done at the same time.
Example
The conference had concurrent sessions on various topics.
B2 adjective ˌkæt.əˈstrɑː.fɪk

catastrophic

Meaning
Involving or causing sudden great damage or suffering.
Example
Climate change has catastrophic consequences.
A2 noun /kənˈtrəʊl/

control

Meaning
The power to influence or direct people's behavior or the course of events.
Example
Proper control measures are necessary.
C1 noun /ˈkɔːrdən/

cordon

Meaning
a line or circle of police, soldiers, or guards preventing access
Example
The police set up a cordon around the crime scene.
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 verb /kənˈvɪns/

convince

Meaning
to make someone believe or feel certain about something
Example
She convinced him to attend the meeting.
B2 verb /kənˈvɜːs/

converse

Meaning
to have a conversation; to talk together
Example
They conversed about literature for hours.
A2 verb /tʃɪər/

cheer

Meaning
to shout in encouragement or support; to make someone feel happier
Example
The fans cheered loudly when their team scored a goal.
B1 adjective /ˈkɒn.fɪ.dənt/

Confident

Meaning
self-assured; certain; having belief in one's abilities
Example
She felt confident about her performance in the exam.
B1 verb /ˈkæptʃər/

capture

Meaning
to take control of something or someone by force
Example
The soldiers managed to capture the enemy base.
C1 noun kənˈɡlɒm.ər.ət

conglomerate

Meaning
A large corporation formed by the merging of separate and diverse firms.
Example
The company grew into a multinational conglomerate.
C1 noun /saɪˈteɪʃən/

citation

Meaning
a quotation from or reference to a book, paper, or author
Example
The research paper included a citation from Shakespeare.
C1 verb /tʃɑːr/

char

Meaning
To burn or scorch something so that it becomes blackened.
Example
The cook accidentally charred the steak.
B2 noun /ˌkɒn.tɪˈnjuː.ɪ.ti/

continuity

Meaning
the state of being continuous or connected; consistency over time
Example
Maintaining continuity in leadership is essential for organizational stability.
B2 noun /ˈkæʃ.uː nʌt/

Cashew Nut

Meaning
a kidney-shaped nut with a creamy texture and mild flavor
Example
Cashew nuts are often used in cooking and as a healthy snack.
A2 noun,verb /kɔːrt/

court

Meaning
a place where legal cases are heard or to seek favor or attention
Example
He courted the judge with respect.
C1 noun ˌkɒn.ʃiˈen.ʃəs.nəs

conscientiousness

Meaning
The quality of wishing to do one's work or duty well and thoroughly; diligence.
Example
Her conscientiousness in work led to a well-organized project.
B1 noun /ˈkæbɪn/

cabin

Meaning
a small shelter or house, often made of wood in a remote area
Example
They spent the weekend in a cozy cabin in the mountains.
C2 noun /kænˈtoʊnmənt/

Cantonment

Meaning
a military base or permanent military station
Example
The soldiers lived in the cantonment outside the city.
B1 adjective ˈkrɪtɪkəl

critical

Meaning
Extremely important; at a point of crisis or urgency.
Example
Addressing critical issues in education is imperative.
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.
B2 noun ক্লাইম্যাটিক কন্ডিশন্স

climatic conditions

Meaning
The atmospheric or weather patterns of a particular region.
Example
Specific climatic conditions are required for snowfall.
C1 adjective /kənˈtɪɡ.ju.əs/

contiguous

Meaning
sharing a common border; touching
Example
The two continguous houses shared a wall.
B2 verb /kənˈsiːd/

concede

Meaning
to admit something is true or valid, often reluctantly
Example
She finally conceded that she was wrong.
C1 verb /tʃæsˈtaɪz/

chastise

Meaning
to criticize or punish severely
Example
The teacher chastised the student for being late.
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 ˌkɒnsəlˈteɪʃən

consultation

Meaning
The action of consulting or discussing; a meeting with an expert or professional to seek advice.
Example
Consultation was essential.
B2 verb /ˈkɒmbæt/

combat

Meaning
to fight against something, especially to reduce or stop it
Example
The government is taking steps to combat corruption.
B1 verb /koʊˈɑːpəreɪt/

cooperate

Meaning
to work together; to collaborate
Example
The teams cooperate to achieve their common goals.
A1 noun /ˈkɒf.i/

Coffee

Meaning
a hot drink made from roasted coffee beans
Example
I need a cup of coffee to start my morning.
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.