wild mango vs fruit tree

wild mango and fruit tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild mango	Yes	No	No	No
fruit tree	Yes	No	No	No

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

wild mango: African tree with edible yellow fruit resembling mangos; valued for its oil-rich seed and hardy green wood that resists termites
fruit tree: tree bearing edible fruit

wild mango (noun)	fruit tree (noun)
African tree with edible yellow fruit resembling mangos; valued for its oil-rich seed and hardy green wood that resists termites	tree bearing edible fruit