Billy the Kid vs criminal

Billy the Kid and criminal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Billy the Kid	Yes	No	No	No
criminal	Yes	Yes	No	No

Billy the Kid (noun)	criminal (noun)
United States outlaw who was said to have killed 21 men (1859-1881)	someone who has committed a crime or has been legally convicted of a crime

Billy the Kid (adjective)	criminal (adjective)
	guilty of crime or serious offense
	involving or being or having the nature of a crime
	bringing or deserving severe rebuke or censure