May apple vs fruit

May apple and fruit both are nouns.

Word	Noun	Adjective	Verb	Adverb
May apple	Yes	No	No	No
fruit	Yes	No	Yes	No

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

May apple (noun)	fruit (noun)
North American herb with poisonous root stock and edible though insipid fruit	an amount of a product
edible but insipid fruit of the May apple plant	the consequence of some effort or action
	the ripened reproductive body of a seed plant

May apple (verb)	fruit (verb)
	bear fruit
	cause to bear fruit