| A | B |
| blatant | overly loud; obvious |
| boisterous | rambunctious; energetic |
| brusque | rudely brief |
| buttress | usually abrick or stone structure constructed for supprt or reinforcement |
| callous | cold; hard; without feelings |
| causual | nonchalant; showing interest; lack of ceremony |
| cathode | a negatively charged electrode in a storage battery or cell |
| charlatan | a person who acts like he or she has knowledge or skill but does not |
| chic | stylish |
| chronic | continuing over a long time |
| civic | municipal; pertaining to citizenship or township |
| civil | courteous |
| cogent (argument) | convincing |
| coherent | clearly holding together; making sense |