subsist vs freewheel

subsist is not a noun while freewheel is a noun.

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

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

Other hyponyms of subsist include breathe, drift.

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

subsist (verb)	freewheel (verb)
support oneself	coast in a vehicle using the freewheel
	live unhurriedly, irresponsibly, or freely