exhaust vs fag out

exhaust is a noun but fag out is not a noun.

Word	Noun	Adjective	Verb	Adverb
exhaust	Yes	No	Yes	No
fag out	No	No	Yes	No

As verbs, fag out is a hypernym of exhaust; that is, fag out is a word with a broader meaning than exhaust:

Other hypernyms of exhaust include fag, fatigue, jade, outwear, tire, tire out, wear, wear down, wear out, wear upon, weary.

exhaust (noun)	fag out (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)	fag out (verb)
wear out completely	exhaust or get tired through overuse or great strain or stress
eliminate (a substance)
use up the whole supply of
use up (resources or materials)
deplete