separatism vs separatist

separatism and separatist both are nouns.

Word	Noun	Adjective	Verb	Adverb
separatism	Yes	No	No	No
separatist	Yes	Yes	No	No

separatism (noun)	separatist (noun)
advocacy of a policy of strict separation of church and state	an advocate of secession or separation from a larger group (such as an established church or a national union)
a disposition toward schism and secession from a larger group; the principles and practices of separatists
a social system that provides separate facilities for minority groups

separatism (adjective)	separatist (adjective)
	having separated or advocating separation from another entity or policy or attitude