nihilist vs nihilism

nihilist and nihilism both are nouns.

Word	Noun	Adjective	Verb	Adverb
nihilist	Yes	No	No	No
nihilism	Yes	No	No	No

nihilist (noun)	nihilism (noun)
an advocate of anarchism	a revolutionary doctrine that advocates destruction of the social system for its own sake
someone who rejects all theories of morality or religious belief	complete denial of all established authority and institutions
	the delusion that things (or everything, including the self) do not exist; a sense that everything is unreal