Rob Roy MacGregor vs criminal

Rob Roy MacGregor and criminal both are nouns.

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

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

Rob Roy MacGregor (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