malignment vs calumny

malignment and calumny both are nouns.

Word	Noun	Adjective	Verb	Adverb
malignment	Yes	No	No	No
calumny	Yes	No	No	No

As nouns, calumny is a hypernym of malignment; that is, calumny is a word with a broader meaning than malignment:

malignment: slanderous defamation
calumny: a false accusation of an offense or a malicious misrepresentation of someone's words or actions

Other hypernyms of malignment include calumniation, defamation, hatchet job, obloquy, traducement.

malignment (noun)	calumny (noun)
slanderous defamation	an abusive attack on a person's character or good name
	a false accusation of an offense or a malicious misrepresentation of someone's words or actions