ache vs hunger

ache and hunger both are nouns.

Word	Noun	Adjective	Verb	Adverb
ache	Yes	No	Yes	No
hunger	Yes	No	Yes	No

As verbs, hunger is a hyponym of ache; that is, hunger is a word with a more specific, narrower meaning than ache:

Other hyponyms of ache include bite, burn, sting, burn, itch, thirst, act up, throb, shoot.

ache (noun)	hunger (noun)
a dull persistent (usually moderately intense) pain	strong desire for something (not food or drink)
	a physiological need for food; the consequence of food deprivation

ache (verb)	hunger (verb)
have a desire for something or someone who is not present	be hungry; go without food
be the source of pain	have a craving, appetite, or great desire for
feel physical pain	feel the need to eat