criminal vs Rob Roy

criminal and Rob Roy both are nouns.

Word	Noun	Adjective	Verb	Adverb
criminal	Yes	Yes	No	No
Rob Roy	Yes	No	No	No

criminal (noun)	Rob Roy (noun)
someone who has committed a crime or has been legally convicted of a crime	a manhattan cocktail made with Scotch whiskey
	Scottish clan leader and outlaw who was the subject of a 1817 novel by Sir Walter Scott (1671-1734)

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