cerca, adv., near; — de, prep., near.
cercado, m., inclosure, field.
cercan-o, -a, adjoining.
cercar, to beset, surround.
cerebro, m., brain.
cero, m., naught, zero.
cerrar, to shut, close.
cerril, rude, rough.
certidumbre, f., certainty.
certificar, to certify, register.