unfit vs broken-backed

unfit and broken-backed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unfit	No	Yes	Yes	No
broken-backed	No	Yes	No	No

unfit (adjective)	broken-backed (adjective)
not in good physical or mental condition; out of condition	(of a ship) so weakened as to sag at each end
below the required standards for a purpose	having the spine damaged
physically unsound or diseased	(of a horse) having bones of the back united by a bony growth

unfit (verb)	broken-backed (verb)
make unfit or unsuitable