pomegranate tree vs pomegranate

pomegranate tree and pomegranate both are nouns.

Word	Noun	Adjective	Verb	Adverb
pomegranate tree	Yes	No	No	No
pomegranate	Yes	No	No	No

As nouns, pomegranate tree and pomegranate are synonyms defined as:

pomegranate tree and pomegranate: shrub or small tree native to southwestern Asia having large red many-seeded fruit

Other synonyms of pomegranate tree include Punica granatum.

pomegranate tree (noun)	pomegranate (noun)
shrub or small tree native to southwestern Asia having large red many-seeded fruit	large globular fruit having many seeds with juicy red pulp in a tough brownish-red rind
	shrub or small tree native to southwestern Asia having large red many-seeded fruit