exhaust vs eruct

exhaust is a noun but eruct is not a noun.

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

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

exhaust (noun)	eruct (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)	eruct (verb)
wear out completely	expel gas from the stomach
eliminate (a substance)	eject or send out in large quantities, also metaphorical
use up the whole supply of
use up (resources or materials)
deplete