hoodlum vs malefactor

hoodlum and malefactor both are nouns.

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

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

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

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

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