hoodlum vs criminal

hoodlum and criminal both are nouns.

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

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

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

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

hoodlum (noun)	criminal (noun)
an aggressive and violent young criminal	someone who has committed a crime or has been legally convicted of a crime

hoodlum (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