exhaust vs luxuriate

exhaust is a noun but luxuriate is not a noun.

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

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

exhaust (noun)	luxuriate (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)	luxuriate (verb)
wear out completely	thrive profusely or flourish extensively
eliminate (a substance)	become extravagant; indulge (oneself) luxuriously
use up the whole supply of	enjoy to excess
use up (resources or materials)
deplete