mamoncillo vs fruit tree

mamoncillo and fruit tree both are nouns.

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

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

mamoncillo: tropical American tree bearing a small edible fruit with green leathery skin and sweet juicy translucent pulp
fruit tree: tree bearing edible fruit

mamoncillo (noun)	fruit tree (noun)
tropical American tree bearing a small edible fruit with green leathery skin and sweet juicy translucent pulp	tree bearing edible fruit