Claudo (claus-um), I shut; close, exclude, seclusion.
Clivus, a slope; declivity.
Colo (cult-um), I till; cultivate, arboriculture.
Copia, plenty; copious, cornucopia.
Coquo (coct-um), I boil; decoction, biscuit.
Cor (cord-is), the heart; courage, cordial, discord.
Corpus (corpor-is), the body; corpse, corps, incorporate.
Credo, I believe; credibility, credence, miscreant.
Creo, I create; create, creation, creature, recreation.
Cresco (cret-um), I grow; crescent, increment.