pomegranate vs fruit tree

pomegranate and fruit tree both are nouns.

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

As nouns, fruit tree is a hypernym of pomegranate; that is, fruit tree is a word with a broader meaning than pomegranate:

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

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