toughie vs crook

toughie and crook both are nouns.

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

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

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

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

toughie (noun)	crook (noun)
a particularly difficult or baffling question or problem	a long staff with one end being hook shaped
an aggressive and violent young criminal	someone who has committed a crime or has been legally convicted of a crime
	a circular segment of a curve

toughie (verb)	crook (verb)
	bend or cause to bend