disqualify vs unfit

disqualify is not an adjective while unfit is an adjective.

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

As verbs, disqualify and unfit are synonyms defined as:

Other synonyms of disqualify include indispose.

disqualify (adjective)	unfit (adjective)
	not in good physical or mental condition; out of condition
	below the required standards for a purpose
	physically unsound or diseased

disqualify (verb)	unfit (verb)
make unfit or unsuitable	make unfit or unsuitable
declare unfit