| A | B |
| coexist | to live together without any problems; to be together in the same time or space |
| cohesive | sticking together |
| coincidence | a sequence of events happening together that although accidental seems to be planned or arranged |
| combine | to put two things together |
| commiserate | to feel sorry for someone, something, or a situation; to feel pity; to get together with someone to feel sadness |
| committee | a group of people who meet together to discuss a topic |
| communication | the act of talking with someone and discussing something together |
| community | a place where people live together |
| compare | to put things together to see how they are the same |
| compatible | able to live together and get along; things that can go together without problems |
| contraband | anything that is against the law to buy or sell |
| contradict | to exppress the opposite |
| contrarian | a person who thinks differently from other people; a person who does the opposite of what is expected |
| contrary | completely different; opposite in nature, opinion or action |
| contrast | to look at different things to see how they are opposites or not related |
| counterbalance | a weight used to balance an opposite weight |
| counterclockwise | in the direction that is opposite of the direction the hands of the clock move |
| counterexample | an example used to support a claim or statement that is the opposite of another claim or statement |
| counterfeit | being the opposite of real; fake or artificial |
| counterintuitive | goes against your gut feeling or common sense |