pusher vs malefactor

pusher and malefactor both are nouns.

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

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

pusher: an unlicensed dealer in illegal drugs
malefactor: someone who has committed a crime or has been legally convicted of a crime

Other hypernyms of pusher include criminal, crook, felon, outlaw, dealer.

pusher (noun)	malefactor (noun)
a small vehicle with four wheels in which a baby or child is pushed around	someone who has committed a crime or has been legally convicted of a crime
a sandal attached to the foot by a thong over the toes
someone who pushes
an unlicensed dealer in illegal drugs
one who intrudes or pushes himself forward