epithet vs obloquy

epithet and obloquy both are nouns.

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

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

epithet: a defamatory or abusive word or phrase
obloquy: a false accusation of an offense or a malicious misrepresentation of someone's words or actions

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

epithet (noun)	obloquy (noun)
descriptive word or phrase	a false accusation of an offense or a malicious misrepresentation of someone's words or actions
a defamatory or abusive word or phrase	state of disgrace resulting from public abuse