| buzz(noun, call, doorbell, buzzer) |
| chime in |
| chip in |
| chord(arrangement, harmony, composition, tune, melody) |
| chorus(noun, agreement, arrangement, harmony, composition) |
| clangor(noun, call, ringing, peal, tolling) |
| clank(noun, verb, sound, call, conflict) |
| clapper |
| cohere(check, agree, fit) |
| come again(expression, return, duplicate, renew, echo) |
| come out with(expression, idiom, state, express, say) |
| comport with(verb, expression, phrasal verb, check, agree) |
| concentus(arrangement, harmony, composition, tune, melody) |
| concern(verb, go, set, fit, apply) |
| conformance(noun, state, act, agree, agreement) |
| congruence(noun, state, act, agree, agreement) |
| congruity(noun, state, act, agree, agreement) |
| consist(verb, check, agree, fit) |
| consort(check, agree, fit) |
| correlate(verb, go, set, fit, apply) |