toughie vs criminal

toughie and criminal both are nouns.

Word	Noun	Adjective	Verb	Adverb
toughie	Yes	No	No	No
criminal	Yes	Yes	No	No

As nouns, criminal is a hypernym of toughie; that is, criminal is a word with a broader meaning than toughie:

toughie: an aggressive and violent young criminal
criminal: someone who has committed a crime or has been legally convicted of a crime

Other hypernyms of toughie include crook, felon, malefactor, outlaw.

toughie (noun)	criminal (noun)
a particularly difficult or baffling question or problem	someone who has committed a crime or has been legally convicted of a crime
an aggressive and violent young criminal

toughie (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