guilty vs criminal

guilty is not a noun while criminal is a noun.

Word	Noun	Adjective	Verb	Adverb
guilty	No	Yes	No	No
criminal	Yes	Yes	No	No

guilty (noun)	criminal (noun)
	someone who has committed a crime or has been legally convicted of a crime

guilty (adjective)	criminal (adjective)
responsible for or chargeable with a reprehensible act	guilty of crime or serious offense
showing a sense of guilt	involving or being or having the nature of a crime
	bringing or deserving severe rebuke or censure