consume vs exhaust

consume is not a noun while exhaust is a noun.

Word	Noun	Adjective	Verb	Adverb
consume	No	No	Yes	No
exhaust	Yes	No	Yes	No

As verbs, consume and exhaust are synonyms defined as:

Other synonyms of consume include deplete, eat, eat up, expend, run through, use, use up, wipe out.

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

consume (noun)	exhaust (noun)
	system consisting of the parts of an engine through which burned gases or steam are discharged
	gases ejected from an engine as waste products

consume (verb)	exhaust (verb)
engage fully	wear out completely
serve oneself to, or consume regularly	eliminate (a substance)
use up (resources or materials)	use up the whole supply of
spend extravagantly	use up (resources or materials)
eat up completely, as with great appetite	deplete
destroy completely