capable adj. having ability; able; competent

capacity n. ability to hold or contain sth

category n. class or group of things in a complete system of grouping

cease v. come or bring (sth) to an end; stop

challenge n. ~ (to do sth) invitation or call (to sb) to take part in a game, contest, fight etc to prove who is better, stronger, more able, etc

channel n. sunken bed of a river, stream or canal

chapter n. (usu numbered) division of a book

chart n. detailed map used to help navigation at sea, showing coasts, rocks, the depth of the sea, etc

chemical adj. of or relating to chemistry

circumstance n. condition or fact connected with an event or action

cite quote; commend

civil adj. of or relating to the citizens of a country

clarify v. (cause sth to) become clear or easier to understand

classic adj. having a high quality that is recognized and unquestioned; of lasting value and importance

clause n. group of words that includes a subject1(4a) and a verb, forming a sentence or part of a sentence

code n. (system of) words, letters, symbols, etc that represent others, used for secret messages or for presenting or recording information briefly

coherent adj. connected logically or consistent; easy to understand; clear

coincide v. ~ (of events) occur at the same time or occupy the same period of time as sth else

collapse v. fall down or in suddenly

colleague n. person with whom one works, esp in a profession or business

commence v. begin (sth); start

comment n. ~ written or spoken remark giving an opinion on, explaining or criticizing (an event, a person, a situation, etc)

commission n. ~ action, task or piece of work given to sb to do

commit v. do (sth illegal, wrong or foolish)

commodity n. thing bought in a shop and put to use, esp in the home

communicate v. ~ sth make sth known; convey sth

community n. the community the people living in one place, district or country, considered as a whole

compatible adj. ~ (of people, ideas, arguments, principles, etc) suited; that can exist together

compensate v. ~ for sth give (sb) sth good to balance or lessen the bad effect of damage, loss, injury,etc;

compile v. ~ sth (for/from sth) collect (information) and arrange it in a book, list, report, etc

complement n. ~ thing that goes well or suitably with sth else, or makes it complete

complex adj. made up of (usu several) closely connected parts

component n. any of the parts of which sth is made

compound n. thing made up of two or more separate things combined together

comprehensive adj. that includes everything

comprise v. have as parts or members; be made up of

compute v. ~ sth calculate sth with a computer

conceive v. become pregnant

concentrate v. ~ (sth) (on sth/doing sth) focus (one's attention, effort, etc) exclusively and intensely on sth, not thinking about other less important things

concept n. ~ idea underlying sth; general notion

conclude v. ~ (with sth) (usu fml ) come or bring (sth) to an end

concurrent adj. ~ existing, happening or done at the same time

conduct n. person's behaviour

confer v. ~ (with sb) (on/about sth) have discussions (esp in order to exchange opinions or get advice)

confine v. ~ sb/sth keep (a person or an animal) in a restricted space

confirm v. provide evidence for the truth or correctness of (a report, an opinion, etc); establish the truth of

conflict n. struggle; fight

conform v. ~ keep to or comply with (generally accepted rules, standards, etc)

consent v. ~ give agreement or permission

consequent adj. ~ (fml ) following sth as a result or an effect

considerable adj. great in amount or size

consist v. (phr v) consist of sth be composed or made up of sth

constant adj. going on all the time; happening again and again

constitute v. (fml ) make up or form (a whole); be the components of

constrain v. make (sb) do sth by strong (moral) persuasion or by force

construct v. build (sth); put or fit together; form

consult v. ~ sb/sth go to (a person, book, etc) for information, advice, etc

consume v. use (sth) up

contact n. ~ state of touching (used esp with the vs shown)

contemporary adj. ~ of the time or period being referred to; belonging to the same time

context writings preceding and following passage quoted

contract n. ~ (for sth/to do sth) legally binding agreement, usu in writing

contradict v. say sth that conflicts with by (sb), suggesting that the person is mistaken or not telling the truth

contrary adj. opposite in nature, tendency or direction

contrast v. ~ A and/with B compare so that differences are made clear

contribute v. ~ (to/towards sth) give one's share of (money, help, advice, etc) to help a joint cause

controversy n. ~ public discussion or argument, often rather angry, about sth which many people disagreewith

convene v. summon to come together; arrange (a meeting, etc)

converse v. ~ (about sth); ~ (together) (fml ) talk

convert v. ~ (sth) (from sth) (into/to sth) change (sth) from one form or use to another

convince v. ~ sb make sb feel certain; cause sb to realize

cooperate to work or act together

coordinate vt. to organize or integrate (diverse elements) in a harmonious operation

core n. centre of such fruits as the apple and pear, containing the seeds

corporate adj. of or shared by all the members of a group; collective

correspond v. ~ be in agreement; not contradict sth or each other

couple n. two people or things that are seen together or associated, esp a man and woman together

create v. cause to exist; make (sth new or original)

credit n. permission to delay payment for goods and services until after they have been received; system of paying in this way

criteria n. (pl of criterion) standard by which sth is judged

crucial adj. ~ very important; decisive

culture n. refined understanding and appreciation of art, literature, etc

currency n. money system in use in a country

cycle n. series of events that are regularly repeated in the same order