calumny vs aspersion

calumny and aspersion both are nouns.

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

As nouns, calumny and aspersion are synonyms defined as:

calumny and aspersion: an abusive attack on a person's character or good name

Other synonyms of calumny include defamation, denigration, slander.

calumny (noun)	aspersion (noun)
an abusive attack on a person's character or good name	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	the act of sprinkling water in baptism (rare)
	a disparaging remark