mafioso vs criminal

mafioso and criminal both are nouns.

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

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

mafioso: a member of the Mafia crime syndicate in the United States
criminal: someone who has committed a crime or has been legally convicted of a crime

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

mafioso (noun)	criminal (noun)
a member of the Mafia crime syndicate in the United States	someone who has committed a crime or has been legally convicted of a crime
a member of the Sicilian Mafia

mafioso (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