denigration vs slander

denigration and slander both are nouns.

Word	Noun	Adjective	Verb	Adverb
denigration	Yes	No	No	No
slander	Yes	No	Yes	No

As nouns, denigration and slander are synonyms defined as:

denigration and slander: an abusive attack on a person's character or good name

Other synonyms of denigration include aspersion, calumny, defamation.

denigration (noun)	slander (noun)
the act of expressing disapproval (especially of yourself)	an abusive attack on a person's character or good name
an abusive attack on a person's character or good name	words falsely spoken that damage the reputation of another
a belittling comment

denigration (verb)	slander (verb)
	charge falsely or with malicious intent; attack the good name and reputation of someone