rose-apple tree vs rose apple

rose-apple tree and rose apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
rose-apple tree	Yes	No	No	No
rose apple	Yes	No	No	No

As nouns, rose-apple tree and rose apple are synonyms defined as:

rose-apple tree and rose apple: tropical tree of the East Indies cultivated for its edible fruit

Other synonyms of rose-apple tree include Eugenia jambos, jambosa.

rose-apple tree (noun)	rose apple (noun)
tropical tree of the East Indies cultivated for its edible fruit	fragrant oval yellowish tropical fruit used in jellies and confections
	tropical tree of the East Indies cultivated for its edible fruit