pomegranate tree vs Punica granatum

pomegranate tree and Punica granatum both are nouns.

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

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

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

Other synonyms of pomegranate tree include pomegranate.

pomegranate tree (noun)	Punica granatum (noun)
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