drug dealer vs malefactor

drug dealer and malefactor both are nouns.

Word	Noun	Adjective	Verb	Adverb
drug dealer	Yes	No	No	No
malefactor	Yes	No	No	No

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

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

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

drug dealer (noun)	malefactor (noun)
an unlicensed dealer in illegal drugs	someone who has committed a crime or has been legally convicted of a crime