separatism vs social system

separatism and social system both are nouns.

Word	Noun	Adjective	Verb	Adverb
separatism	Yes	No	No	No
social system	Yes	No	No	No

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

separatism: a social system that provides separate facilities for minority groups
social system: the people in a society considered as a system organized by a characteristic pattern of relationships

Other hypernyms of separatism include social organisation, social organization, social structure, structure.

separatism (noun)	social system (noun)
advocacy of a policy of strict separation of church and state	the people in a society considered as a system organized by a characteristic pattern of relationships
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