exhaust vs maturate

exhaust is a noun but maturate is not a noun.

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

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

exhaust (noun)	maturate (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

exhaust (verb)	maturate (verb)
wear out completely	ripen and generate pus
eliminate (a substance)	develop and reach maturity; undergo maturation
use up the whole supply of	grow old or older
use up (resources or materials)
deplete