catalyze
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C1 verb /ˈkætəˌlaɪz/

catalyze

Meaning
To cause or accelerate a reaction or change.
Example
The new law catalyzed reforms across the sector.
B1 noun /kənˈvɛnʃən/

convention

Meaning
a widely accepted way of behaving or doing something; a formal meeting
Example
The annual writers' convention was held in Dhaka.
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 /kænˈtɑː.tə/

cantata

Meaning
A vocal composition with instrumental accompaniment, typically in several movements, often involving a choir.
Example
The choir performed a beautiful cantata during the festival.
B1 noun /ˈkɔːlɪˌflaʊər/

Cauliflower

Meaning
white vegetable with a compact head of undeveloped flower buds
Example
Roasted cauliflower makes a delicious and healthy side dish.
C2 adjective /ˌkɒn.tjʊˈmeɪ.ʃəs/

contumacious

Meaning
stubbornly disobedient or rebellious
Example
The contumacious student refused to follow the school rules.
B1 noun /sɛl/

cell

Meaning
a small basic unit of life; or a small enclosed space like a prison room
Example
The prisoner was locked in a small cell.
A1 adjective /kloʊzd/

closed

Meaning
not open; shut
Example
The store is closed on Fridays.
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.
A2 noun /ˈkæs.əl/

Castle

Meaning
a large fortified building or set of buildings; a fortress
Example
The medieval castle stood majestically on top of the hill.
C1 noun kɒɡˈnɪʃ.ən

cognition

Meaning
The mental action or process of acquiring knowledge and understanding through thought, experience, and the senses.
Example
Cognition plays a key role in learning.
A1 verb /tʃuːz/

choose

Meaning
to pick or select from several options
Example
I always choose healthy food options.
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.
C1 adjective /ˈkɒnvɛks/

convex

Meaning
curved or rounded outward
Example
The lens has a convex shape to focus light.
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.
B1 noun/adjective /ˌkærəktəˈrɪstɪk/

characteristic

Meaning
A distinguishing quality or feature of a person, place, or thing.
Example
Kindness is a characteristic of true leadership.
C1 noun /kənˈteɪdʒən/

contagion

Meaning
The communication of disease from one person to another by close contact; also the spread of harmful ideas or behaviors.
Example
Fear spread like a contagion through the crowd.
B1 noun /ˈkɜː.ri/

Curry

Meaning
a dish of meat, vegetables, etc., cooked in an Indian-style sauce with hot spices
Example
I love spicy chicken curry with rice.
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.
A2 adjective /ˈkeər.fəl/

Careful

Meaning
taking care to avoid potential problems or dangers; cautious; attentive
Example
Be careful when crossing the busy street during rush hour.
B1 noun ˈkʌrənsi

currency

Meaning
A system of money in general use in a particular country; the fact or quality of being generally accepted or in use.
Example
Dual currency systems were proposed.
B2 verb /kənˈsiːl/

conceal

Meaning
to hide something or keep it secret
Example
He tried to conceal his disappointment behind a smile.
C1 verb কনডেন্স

condense

Meaning
To change from gas to liquid form; to become denser.
Example
Water vapor condenses into raindrops.
C1 noun /kəˈlɪɡrəfi/

calligraphy

Meaning
The art of beautiful and decorative handwriting.
Example
She took a course to improve her calligraphy skills.
C2 verb /ˈkælvɪnaɪz/

calvinize

Meaning
to imbue with the principles or doctrines of Calvinism
Example
The preacher sought to calvinize the community with strict teachings.
B2 noun /ˈkreɪvɪŋ/

craving

Meaning
a strong desire for something
Example
She has a craving for chocolate every evening.
B2 adjective /kənˈdʒɛstɪd/

congested

Meaning
Blocked up with too much traffic or crowding.
Example
The road was congested during rush hour.
B2 noun /kəˈtæstrəfi/

catastrophe

Meaning
A sudden and widespread disaster or misfortune.
Example
The earthquake was a catastrophe for the entire region.
A2 noun /klɔːθ/

Cloth

Meaning
woven or felted fabric made from wool, cotton, or a similar fiber
Example
The tailor cut the cloth into precise pieces.
B2 noun /ˈsɜːrkɪt/

circuit

Meaning
A roughly circular line, route, or movement that starts and ends at the same place; also an electrical pathway.
Example
The runners completed the circuit around the park.
B2 noun /ˌkɒrəˈspɒndənt/

correspondent

Meaning
A journalist who reports news from a particular place or on a particular subject.
Example
The foreign correspondent reported live from Paris.
B2 adjective /ˌkɒst.ɪˈfɪʃ.ənt/

cost-efficient

Meaning
Achieving maximum productivity with minimum wasted effort or expense.
Example
Cost-efficient solutions benefit industries.
C1 noun /ˌkɔr.diˈæl.ɪ.ti/

Cordiality

Meaning
sincere affection and kindness; warm and friendly behavior
Example
The host's cordiality made all the guests feel welcome and comfortable.
B2 adjective /kənˈvɪnsɪŋ/

Convincing

Meaning
believable; credible; persuasive; able to make someone believe something
Example
His convincing argument won over the entire jury.
B2 noun /ˌkɑː.bəʊˈhaɪ.dreɪts/

carbohydrates

Meaning
Organic compounds consisting of carbon, hydrogen, and oxygen, serving as a primary source of energy for the body.
Example
Whole grains are a great source of healthy carbohydrates.
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.
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 verb /kəˈlʌmnieɪt/

calumniate

Meaning
To make false and damaging statements about someone; to slander.
Example
He was furious when he realized they had calumniated his reputation.
C2 verb /kənˈdʒiːl/

congeal

Meaning
to become thick or solid, especially from cooling
Example
The soup began to congeal after being left on the table.
C1 noun kənˈsjuː.mə.rɪ.zəm

consumerism

Meaning
The tendency to increase consumption of goods and the importance given to consuming products.
Example
Modern consumerism leads to increased demand for luxury goods.
C2 adjective /ˈkɒŋɡruənt/

congruent

Meaning
in agreement or harmony; having the same shape and size in geometry
Example
Their values are congruent with the goals of the organization.
A2 noun /ˈkʌp.bɔːrd/

Cupboard

Meaning
a piece of furniture with doors and shelves for storing dishes, food, or clothes
Example
She stored all the plates and bowls in the kitchen cupboard.
C1 noun ˈkɒnfluəns

confluence

Meaning
An act or process of merging.
Example
The confluence of ideas from different cultures created a rich discussion.
B2 noun/verb /kjuː/

cue

Meaning
A signal or prompt for action; to give a signal.
Example
The actor waited for his cue before entering the stage.
B2 noun /kənˌfɪɡəˈreɪʃən/

configuration

Meaning
an arrangement of parts or elements in a particular form or structure
Example
The configuration of the system needs to be adjusted for better performance.
C1 noun /ˈkæviˌæt/

caveat

Meaning
a warning or condition to be considered before taking action
Example
The proposal was accepted with one caveat.
C2 verb /ˈkɔː.tə.raɪz/

cauterize

Meaning
to burn tissue to stop bleeding or prevent infection
Example
The doctor cauterized the wound to stop the bleeding.
C2 verb /ˈkɒdʒɪteɪt/

cogitate

Meaning
to think deeply about something; to meditate or reflect
Example
He sat by the river to cogitate on his future plans.
C1 verb /kənˈtɛkstʃuəlaɪz/

contextualize

Meaning
to place something in a context or interpret it in relation to its surroundings
Example
The teacher contextualized the historical event to make it more relevant for students.
B1 verb /ˈkæptʃər/

capture

Meaning
to take control of something or someone by force
Example
The soldiers managed to capture the enemy base.
C2 noun /ˈsɪɡnət/

cygnet

Meaning
a young swan
Example
The cygnet swam closely behind its mother.
C2 noun /ˈkætɪtʃuː/

Catechu

Meaning
an extract from a tropical Asian plant, used in tanning and dyeing
Example
Catechu extract is commonly used in traditional medicine.
B1 verb /ˈkrɪtɪsaɪz/

criticize

Meaning
to express disapproval or find fault with someone or something
Example
The teacher criticized the student's poor handwriting.
C1 verb /krɪndʒ/

cringe

Meaning
To shrink back in fear, embarrassment, or discomfort.
Example
She cringed when she remembered her mistake.
B2 adjective /kɒzˈmɛt.ɪk/

cosmetic

Meaning
relating to beauty or appearance; intended to improve looks
Example
She bought a new cosmetic cream for her skin.
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 /koʊˈɪnsɪdənt/

coincident

Meaning
Occurring at the same time; occupying the same position in space or time.
Example
The festival was coincident with the national holiday.
B1 noun ˈtʃeə.pɜː.sən

chairperson

Meaning
A person who is in charge of a meeting or organization; the presiding officer of a committee, board, or organization.
Example
The chairperson ensures procedural integrity.
B2 noun /krɑk pɑt/

Crock pot

Meaning
an electric cooking pot that cooks food slowly at low temperatures
Example
I put the chicken and vegetables in the crock pot before going to work.
C2 adjective /kɒnˈsæŋɡwɪn/

consanguine

Meaning
Of the same blood or origin; related by birth.
Example
The two families were consanguine through their grandparents.
C2 noun /kænt/

cant

Meaning
Hypocritical and insincere talk, especially about moral or religious principles.
Example
The politician's speech was filled with cant about honesty and integrity.
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.
A2 noun /kraɪm/

crime

Meaning
An illegal act punishable by law.
Example
The police are investigating the crime.
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 noun /ˈkævərn/

cavern

Meaning
a large cave or chamber in a cave
Example
The explorers entered a dark cavern beneath the mountain.
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.
B1 adjective /kəˈlɛktɪd/

collected

Meaning
calm and in control of oneself
Example
She remained calm and collected during the crisis.
A2 noun /ˈsɪɡəˌrɛt/

cigarette

Meaning
a small roll of finely cut tobacco wrapped in paper for smoking
Example
He lit a cigarette after dinner.
B2 noun /kənˈvɜː.ʃən/

Conversion

Meaning
The process of changing or causing something to change from one form to another.
Example
High website conversion rates indicate effective marketing.
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.
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.
B1 adjective ˈkɒmplɛks

complex

Meaning
Having many interrelated parts or factors; complicated.
Example
The relationship between poverty and education is complex.
C1 adjective /ˌkætəˈɡɒrɪkəl/

categorical

Meaning
Absolute and without exception; expressed clearly and directly.
Example
She gave a categorical denial of the allegations.
A1 adjective /tʃiːp/

Cheap

Meaning
low in price; costing little money
Example
This restaurant serves cheap but delicious food.
B2 noun /kənˈstɪtʃ.u.ənts/

constituents

Meaning
Components or elements used to create something.
Example
Proteins and vitamins are essential constituents of a healthy diet.
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 /kənˈkʌrəns/

concurrence

Meaning
Agreement or union in action, opinion, or occurrence; simultaneous happening of events.
Example
The project was completed with the concurrence of all departments.
B2 noun /kənˈsɛnt/

consent

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

choral

Meaning
Relating to, written for, or performed by a choir or chorus.
Example
The church hosted a choral performance on Sunday.
C2 verb /ˌkɒnvəˈlɛs/

convalesce

Meaning
to recover health and strength after illness or medical treatment
Example
After the surgery, she spent several weeks convalescing at home.
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.
B2 verb /koʊp/

cope

Meaning
to deal effectively with something difficult
Example
She had to cope with a lot of pressure at work.
C1 adjective /ˈkrɛdɪtəbl/

creditable

Meaning
Deserving praise or acknowledgment, though not necessarily outstanding.
Example
She made a creditable effort in completing the project on time.
B2 adjective /ˈtʃaɪld.laɪk/

Childlike

Meaning
innocent and trusting like a child; having the good qualities of a child; pure and simple
Example
She maintained a childlike wonder about the world around her.
C1 noun /ˈsɛntrɪˌfjuːdʒ/

centrifuge

Meaning
A machine that spins substances at high speed to separate different components.
Example
The lab technician used a centrifuge to separate the blood cells from the plasma.
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.
B2 adjective /ˈkælkjuleɪtɪd/

calculated

Meaning
Done with full awareness of the consequences; deliberate or carefully planned.
Example
Her calculated move gave her an advantage over her competitors.
C2 noun /ˈklɪpər/

clipper

Meaning
a tool used for cutting, or a fast sailing ship of the 19th century
Example
The barber used clippers to trim his hair.
C2 noun /ˌkæθəˈlɪsɪti/

catholicity

Meaning
Universality; broad-mindedness; acceptance of a wide variety of things.
Example
Her catholicity of interests makes her a fascinating person.
C1 adjective /kənˈtraɪvd/

contrived

Meaning
artificial or forced; not natural or spontaneous
Example
The ending of the movie felt contrived and unrealistic.
A2 noun /kæʃ/

cash

Meaning
money in the form of bills or coins, not checks or credit
Example
She paid the bill in cash.
C1 noun /krʊk/

crook

Meaning
a dishonest person, especially a criminal
Example
The police finally caught the crook who had been stealing cars.
C2 noun /ˈkɑr.mɪn/

Carmine

Meaning
a vivid crimson color; a red pigment obtained from cochineal
Example
The artist mixed carmine with white to create a beautiful pink shade.
B2 adjective /ˈkɒnʃəs/

conscious

Meaning
Aware of and responding to one's surroundings; awake.
Example
She was fully conscious after the surgery.
C1 noun kənˌsɒl.ɪˈdeɪ.ʃən

Consolidation

Meaning
The process of converting newly learned information into long-term memory
Example
Sleep plays a key role in memory consolidation.
A1 noun /ˈkʌl.ər/

Colour

Meaning
the property possessed by an object of producing different sensations on the eye as a result of the way it reflects light; hue, tint, shade
Example
What is your favorite colour for painting the bedroom walls?
C1 noun ˌkʌl.mɪˈneɪ.ʃən

culmination

Meaning
The highest or climactic point of something, especially as attained after a long time.
Example
The project reached its culmination after years of effort.
A1 verb /keɪm/

came

Meaning
past tense of 'come'
Example
She came to the party on time.
C1 adjective,noun /kənˈtɪn.dʒənt/

contingent

Meaning
dependent on something else; a group of people representing an organization
Example
Attendance is contingent on prior registration. / A contingent of students attended the conference.
B2 verb /kəˈlæps/

collapse

Meaning
to fall down or inward suddenly; to break down completely
Example
The old building collapsed after the earthquake.
B1 adverb /ˈtʃɪəfəli/

cheerfully

Meaning
in a happy and positive manner; with visible good spirits
Example
She greeted everyone cheerfully despite the long day.
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 noun /tʃɪt/

Chit

Meaning
a short note, typically a brief informal letter; a voucher for a sum owed
Example
She left a chit on the table asking him to call her back.
C1 noun /ˈkoʊmə/

coma

Meaning
A deep state of prolonged unconsciousness caused by illness or injury.
Example
The patient remained in a coma for several weeks.
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.
B2 verb /kənˈfɔːrm/

conform

Meaning
To comply with rules, standards, or laws.
Example
Students must conform to the school regulations.
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.
C1 adjective /kənˈsɛntrɪk/

concentric

Meaning
having a common center, as in circles or spheres
Example
The artist drew concentric circles on the canvas.
C1 noun /ˌkɒmpɪˈleɪʃən/

compilation

Meaning
a collection of things, especially pieces of writing or music, gathered together
Example
The book is a compilation of his best essays.
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.
A1 verb /klɪr/

clear

Meaning
to remove obstructions; to make clean or transparent
Example
Please clear the table after dinner.
C1 noun /ˈkroʊ.bɑːr/

Crowbar

Meaning
a heavy iron bar with a curved end used as a lever for prying things apart
Example
He used a crowbar to remove the old nails.
C1 noun /ˈkeɪ.sɪŋ/

Casing

Meaning
a cover or shell that protects or encloses something
Example
The mechanic removed the engine casing to examine the internal parts.
B2 noun /ˈkrɪstəl/

crystal

Meaning
a clear, transparent mineral or glass that forms a solid structure with regular patterns
Example
She wore a necklace made of sparkling crystal.
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.
B2 verb /kəmˈpoʊz/

compose

Meaning
to create music or writing; to make up; to calm oneself
Example
She composes beautiful songs.
C1 noun /ˈkɔːl.drən/

Cauldron

Meaning
a large metal pot with a lid and handle, used for cooking over a fire
Example
The witch stirred her potion in a large cauldron.
C1 noun koʊˈhisɪv ˈjunɪts

cohesive units

Meaning
Groups or organizations that work together as unified wholes, with members closely bound together.
Example
Early humans formed cohesive units for survival.
C1 noun /ˈkælɪbər/

caliber

Meaning
The quality of someone's ability or character; the internal diameter of a gun barrel.
Example
The university attracts students of high caliber.