unfit vs bowleg

unfit is not a noun while bowleg is a noun.

Word	Noun	Adjective	Verb	Adverb
unfit	No	Yes	Yes	No
bowleg	Yes	Yes	No	No

unfit (noun)	bowleg (noun)
	a leg bowed outward at the knee (or below the knee)

unfit (adjective)	bowleg (adjective)
not in good physical or mental condition; out of condition	have legs that curve outward at the knees
below the required standards for a purpose
physically unsound or diseased

unfit (verb)	bowleg (verb)
make unfit or unsuitable