apricot tree vs fruit tree

apricot tree and fruit tree both are nouns.

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

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

apricot tree: Asian tree having clusters of usually white blossoms and edible fruit resembling the peach
fruit tree: tree bearing edible fruit

apricot tree (noun)	fruit tree (noun)
Asian tree having clusters of usually white blossoms and edible fruit resembling the peach	tree bearing edible fruit