*casco* m. skull, head (used also in pl.)
*casero* m. landlord
*casi* almost
*caso* m. case; *el —— es* the fact is
*cáspita* exclam. indicating surprise wonderful, gracious
*castigar* punish
*castillo* m. castle
*castizo* chaste, pure
*causa* f. cause, sake
*cé* ts (hissing sound made to call some one's attention)