Saint-John's-bread vs carob

Saint-John's-bread and carob both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint-John's-bread	Yes	No	No	No
carob	Yes	No	No	No

As nouns, Saint-John's-bread and carob are synonyms defined as:

Saint-John's-bread and carob: powder from the ground seeds and pods of the carob tree; used as a chocolate substitute

Other synonyms of Saint-John's-bread include carob powder.

Saint-John's-bread (noun)	carob (noun)
powder from the ground seeds and pods of the carob tree; used as a chocolate substitute	powder from the ground seeds and pods of the carob tree; used as a chocolate substitute
	evergreen Mediterranean tree with edible pods; the biblical carob
	long pod containing small beans and sweetish edible pulp; used as animal feed and source of a chocolate substitute