carob tree vs carob bean tree

carob tree and carob bean tree both are nouns.

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

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

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

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

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