Billie the Kid vs criminal

Billie the Kid and criminal both are nouns.

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

Billie 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

Billie 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