malignment vs obloquy

malignment and obloquy both are nouns.

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

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

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

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

malignment (noun)	obloquy (noun)
slanderous defamation	a false accusation of an offense or a malicious misrepresentation of someone's words or actions
	state of disgrace resulting from public abuse