separationism vs separatism

separationism and separatism both are nouns.

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

As nouns, separationism and separatism are synonyms defined as:

separationism and separatism: advocacy of a policy of strict separation of church and state

separationism (noun)	separatism (noun)
advocacy of a policy of strict separation of church and state	advocacy of a policy of strict separation of church and state
	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