Well, I can provide a few words to get you started: cabal, cafe, cage, calm, cake, and calf.
Card, Cats, Call, Cent, Cage, Cost, Cell, Case, Cart, Cash, Code, Clod, Carp, Cold, Case, Cape, Cake
come
some four (4) letter word that start with C: cone. cool. cope. coop. come. cute. call. code. croc. chic. cold. cash. crap. camp. call. care. cast. calm. cook. cape. cook. core. cope. cake. cafe....