| coefficient(adjective, collateral, attendant, kindred, congeneric) |
| cognated(adjective, collateral, attendant, kindred, congeneric) |
| coincident(adjective, collateral, interchangeable, attendant, proportionate) |
| collateral(adjective, attendant, kindred, congeneric) |
| common(adjective, interchangeable, proportionate, homologous, socialistic) |
| communicate |
| communication |
| communistic(adjective, interchangeable, proportionate, homologous, socialistic) |
| commutable(adjective, interchangeable, proportionate, homologous, socialistic) |
| commutual(adjective, interchangeable, proportionate, homologous, socialistic) |
| completory(adjective, interchangeable, proportionate, homologous, socialistic) |
| concordant(adjective, collateral, interchangeable, attendant, proportionate) |
| confirmatory(adjective, collateral, attendant, kindred, congeneric) |
| conformant(adjective, organized, interchangeable, proportionate, homologous) |
| congeneric(adjective, collateral, attendant, kindred) |
| congruous(adjective, interchangeable, proportionate, homologous, socialistic) |
| conjoined with(expression, adjective, collateral, attendant, kindred) |
| conjunct(adjective, interchangeable, proportionate, homologous, socialistic) |
| consonant(adjective, interchangeable, proportionate, homologous, socialistic) |
| coordinate(adjective, interchangeable, proportionate, homologous, socialistic) |