exist vs freewheel

exist is not a noun while freewheel is a noun.

Word	Noun	Adjective	Verb	Adverb
exist	No	No	Yes	No
freewheel	Yes	No	Yes	No

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

Other hyponyms of exist include breathe, drift.

exist (noun)	freewheel (noun)
	a clutch (as on the rear wheel of a bicycle) that allows wheels to turn freely (as in coasting)

exist (verb)	freewheel (verb)
have an existence, be extant	coast in a vehicle using the freewheel
support oneself	live unhurriedly, irresponsibly, or freely