criminal vs guilty

criminal is a noun but guilty is not a noun.

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

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

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