acorn vs fruit

acorn and fruit both are nouns.

Word	Noun	Adjective	Verb	Adverb
acorn	Yes	No	No	No
fruit	Yes	No	Yes	No

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

acorn: fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base
fruit: the ripened reproductive body of a seed plant

acorn (noun)	fruit (noun)
fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base	an amount of a product
	the consequence of some effort or action
	the ripened reproductive body of a seed plant

acorn (verb)	fruit (verb)
	bear fruit
	cause to bear fruit