| cassis | casis |
| cassissier | grosellero negro |
| Cassitérite | Casiterita |
| Cassius Clay | Muhammad Ali |
| cassonade | azúcar moreno |
| cassonade blanche | azúcar sin cristalizar |
| cassure chromosomique | deleción |
| cassé | descompuesto |
| Castagnac | Castagnac |
| castagnette | castañuela |
| Castalia | Castalia |
| Castalie | Castalia |
| Castaneda | Castaneda |
| Castanet-le-Haut | Castanet-le-Haut |
| Castanopsis | Castanopsis |
| Castasegna | Castasegna |
| caste | camarilla |
| Castel del Monte | Castel del Monte |
| Castel Gandolfo | Castel Gandolfo |
| Castel San Pietro | Castel San Pietro |
| Castell | Casteller |
| Castellare-di-Casinca | Castellare-di-Casinca |
| Castellare-di-Mercurio | Castellare-di-Mercurio |
| Castellfollit de la Roca | Castellfullit de la Roca |
| Castelli | Castelli |
| Castello | Castillo |
| Castello Sforzesco | Castillo Sforzesco |
| Castello-di-Rostino | Castello-di-Rostino |
| Castellum | Castillo |
| Castellón de la Plana | Castellón de la Plana |
| Castelo Branco | Castelo Branco |
| Castelo de São Jorge | Castillo de San Jorge de Lisboa |
| Castelsarrasin | Castelsarrasin |
| Casti-Wergenstein | Casti-Wergenstein |
| Castiel | Castiel |
| Castifao | Castifao |
| castillan | español |
| Castillan argentin | Castellano rioplatense |
| Castillan chilien | Español chileno |
| Castille | Castilla |
| Castille-et-León | Castilla y León |
| Castille-et-Léon | Castilla-León |
| Castille-La Manche | Castilla-La Mancha |
| Castillo | Castillo |
| Castillo Club de Fútbol | Castillo Club de Fútbol |
| Castillonuevo | Castillonuevo |
| Castine | Caliza |
| Castineta | Castineta |
| Castinus | Flavio Castino |
| Castirla | Castirla |
| Castle Dale | Castle Dale |
| Castle Howard | Castillo de Howard |
| Castle of Illusion | Castle of Illusion Starring Mickey Mouse |
| Castle Valley | Castle Valley |
| castor | castor |
| Castor canadien | Castor canadensis |
| Castor de Karden | Cástor |
| Castor fiber | Castor fiber |
| Castoridae | Castoridae |
| Castoroides ohioensis | Castoroides |
| Castoréum | Castoreo |
| castrat | eunuco |
| castration | castración |
| castrer | castrar |
| Castries | Castries |
| Castrisch | Castrisch |
| Castro-Urdiales | Castro-Urdiales |
| Castrop-Rauxel | Castrop-Rauxel |
| Casu marzu | Casu marzu |
| Casualité | Causalidad |
| Casuariidae | Casuarius |
| Casuarinaceae | Casuarinaceae |
| casuiste | casuista |
