pomegranate vs pomegranate tree

pomegranate and pomegranate tree both are nouns.

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

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

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

Other synonyms of pomegranate include Punica granatum.

pomegranate (noun)	pomegranate tree (noun)
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
shrub or small tree native to southwestern Asia having large red many-seeded fruit