unfit vs gibbous

unfit and gibbous both are adjectives.

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

unfit (adjective)	gibbous (adjective)
not in good physical or mental condition; out of condition	(used of the moon) more than half full
below the required standards for a purpose	characteristic of or suffering from kyphosis, an abnormality of the vertebral column
physically unsound or diseased

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