coconspirator vs malefactor

coconspirator and malefactor both are nouns.

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

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

coconspirator: a member of a conspiracy
malefactor: someone who has committed a crime or has been legally convicted of a crime

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

coconspirator (noun)	malefactor (noun)
a member of a conspiracy	someone who has committed a crime or has been legally convicted of a crime