grub vs fare

grub and fare both are nouns.

Word	Noun	Adjective	Verb	Adverb
grub	Yes	No	Yes	No
fare	Yes	No	Yes	No

As nouns, fare is a hypernym of grub; that is, fare is a word with a broader meaning than grub:

grub (noun)	fare (noun)
a soft thick wormlike larva of certain beetles and other insects	an agenda of things to do
informal terms for a meal	the food and drink that are regularly served or consumed
	a paying (taxi) passenger
	the sum charged for riding in a public conveyance

grub (verb)	fare (verb)
search about busily	eat well
ask for and get free; be a parasite	proceed or get along