| A | B |
| calculator | a tool used to calculate math problems |
| catalog | a book or paper listing all the things for sale or display |
| concentrate | to gather one's thoughts or efforts; to stay focused |
| companion | a person that is a friend, pal, buddy, comrade |
| collapse | to fall down suddenly; to break down or fail suddenly |
| concern | having to do with; to worry about |
| consider | to think over |
| cylinder | a round figure with circles at both ends |
| citizen | a person who is a member of a country or state |
| cereal | usually a breakfast ffod that is made from a grain such as rice, wheat |
| certain | without any doubt or question |
| canvas | a strong, heavy cloth made from or flax; used in making tents, sails |
| cathedral | a large beautiful church |
| comedy | something that is comical or funny |
| captain | the leader of the group |
| celebrate | to honor a victory or memory in some special way |
| centennial | lasting for a hundred years |
| cyclone | a storm with very high winds |