Persea Americana vs fruit tree

Persea Americana and fruit tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Persea Americana	Yes	No	No	No
fruit tree	Yes	No	No	No

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

Persea Americana (noun)	fruit tree (noun)
tropical American tree bearing large pulpy green fruits	tree bearing edible fruit