assassinate vs slander

assassinate is not a noun while slander is a noun.

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

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

assassinate: destroy or damage seriously, as of someone's reputation
slander: charge falsely or with malicious intent; attack the good name and reputation of someone

Other hypernyms of assassinate include asperse, besmirch, calumniate, defame, denigrate, smear, smirch, sully.

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

assassinate (verb)	slander (verb)
destroy or damage seriously, as of someone's reputation	charge falsely or with malicious intent; attack the good name and reputation of someone
murder; especially of socially prominent persons