slander vs accuse

slander is a noun but accuse is not a noun.

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

As verbs, accuse is a hypernym of slander; that is, accuse is a word with a broader meaning than slander:

slander: charge falsely or with malicious intent; attack the good name and reputation of someone
accuse: blame for, make a claim of wrongdoing or misbehavior against

Other hypernyms of slander include charge.

slander (noun)	accuse (noun)
an abusive attack on a person's character or good name
words falsely spoken that damage the reputation of another

slander (verb)	accuse (verb)
charge falsely or with malicious intent; attack the good name and reputation of someone	bring an accusation against; level a charge against
	blame for, make a claim of wrongdoing or misbehavior against