sex segregation vs separatism

sex segregation and separatism both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex segregation	Yes	No	No	No
separatism	Yes	No	No	No

As nouns, separatism is a hypernym of sex segregation; that is, separatism is a word with a broader meaning than sex segregation:

sex segregation: the traditional Hindu or Muslim system of keeping women secluded
separatism: a social system that provides separate facilities for minority groups

Other hypernyms of sex segregation include segregation.

sex segregation (noun)	separatism (noun)
the traditional Hindu or Muslim system of keeping women secluded	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