defamation vs obloquy

defamation and obloquy both are nouns.

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

As nouns, defamation and obloquy are synonyms defined as:

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

Other synonyms of defamation include calumniation, calumny, hatchet job, traducement.

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