unqualified vs quack

unqualified is not a noun while quack is a noun.

Word	Noun	Adjective	Verb	Adverb
unqualified	No	Yes	No	No
quack	Yes	Yes	Yes	No

unqualified (noun)	quack (noun)
	the harsh sound of a duck
	an untrained person who pretends to be a physician and who dispenses medical advice

unqualified (adjective)	quack (adjective)
not meeting the proper standards and requirements and training	medically unqualified
not limited or restricted
legally not qualified or sufficient
having no right or entitlement

unqualified (verb)	quack (verb)
	act as a medical quack or a charlatan
	utter quacking noises