carob bean tree vs carob tree

carob bean tree and carob tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
carob bean tree	Yes	No	No	No
carob tree	Yes	No	No	No

As nouns, carob bean tree and carob tree are synonyms defined as:

carob bean tree and carob tree: evergreen Mediterranean tree with edible pods; the biblical carob

Other synonyms of carob bean tree include algarroba, carob, Ceratonia siliqua.

carob bean tree (noun)	carob tree (noun)
evergreen Mediterranean tree with edible pods; the biblical carob	evergreen Mediterranean tree with edible pods; the biblical carob