mangosteen vs fruit tree

mangosteen and fruit tree both are nouns.

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

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

mangosteen (noun)	fruit tree (noun)
two- to three-inch tropical fruit with juicy flesh suggestive of both peaches and pineapples	tree bearing edible fruit
East Indian tree with thick leathery leaves and edible fruit