Rob Roy vs criminal

Rob Roy and criminal both are nouns.

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

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

Rob Roy (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