WordNet sense 1 (long pod containing small beans and sweetish edible pulp; used as animal feed and source of a chocolate substitute):

carob, algarroba bean, carob bean, locust bean, locust pod

WordNet sense 2 (evergreen Mediterranean tree with edible pods; the biblical carob):

carob bean tree, carob tree, Ceratonia siliqua

WordNet sense 3 (mesquite pod used in tanning and dying):

algarobilla, algarrobilla

WordNet sense 4 (mesquite of Gulf Coast and Caribbean islands from Mexico to Venezuela):

Prosopis juliflora, Prosopis juliiflora