unfit vs unsuitable

unfit and unsuitable both are adjectives.

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

unfit (adjective)	unsuitable (adjective)
not in good physical or mental condition; out of condition	not conducive to good moral development
below the required standards for a purpose	not worthy of being chosen (especially as a spouse)
physically unsound or diseased	not meant or adapted for a particular purpose
	not capable of being applied

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