clarificar - to clarify, illuminate, light [up], brighten
clasificar - to classify, grade, rate, sort
cobrar - to charge [a price]; to cash [a check]; to collect, receive [an amount]
cocinar - to cook; to do the cooking
coger - to catch, grasp, take hold of
colgar - to hang, hang up, be hanging, be suspended
colocar - to locate, place
colonizar - to colonize, settle
combatir - to combat, fight, oppose; to attack