assassinate vs assassination

assassinate is not a noun while assassination is a noun.

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

assassinate (noun)	assassination (noun)
	murder of a public figure by surprise attack
	an attack intended to ruin someone's reputation

assassinate (verb)	assassination (verb)
destroy or damage seriously, as of someone's reputation
murder; especially of socially prominent persons