accessory vs malefactor

accessory and malefactor both are nouns.

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

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

accessory: someone who helps another person commit a crime
malefactor: someone who has committed a crime or has been legally convicted of a crime

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

accessory (noun)	malefactor (noun)
a supplementary component that improves capability	someone who has committed a crime or has been legally convicted of a crime
clothing that is worn or carried, but not part of your main clothing
someone who helps another person commit a crime

accessory (adjective)	malefactor (adjective)
furnishing added support
aiding and abetting in a crime