exhaust vs fool away

exhaust is a noun but fool away is not a noun.

Word	Noun	Adjective	Verb	Adverb
exhaust	Yes	No	Yes	No
fool away	No	No	Yes	No

exhaust (noun)	fool away (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)	fool away (verb)
wear out completely	spend frivolously and unwisely
eliminate (a substance)
use up the whole supply of
use up (resources or materials)
deplete