bitter orange tree vs bigarade

bitter orange tree and bigarade both are nouns.

Word	Noun	Adjective	Verb	Adverb
bitter orange tree	Yes	No	No	No
bigarade	Yes	No	No	No

As nouns, bitter orange tree and bigarade are synonyms defined as:

bitter orange tree and bigarade: any of various common orange trees yielding sour or bitter fruit; used as grafting stock

Other synonyms of bitter orange tree include bitter orange, Citrus aurantium, marmalade orange, Seville orange, sour orange.

bitter orange tree (noun)	bigarade (noun)
any of various common orange trees yielding sour or bitter fruit; used as grafting stock	any of various common orange trees yielding sour or bitter fruit; used as grafting stock