segregation vs separation

segregation and separation both are nouns.

Word	Noun	Adjective	Verb	Adverb
segregation	Yes	No	No	No
separation	Yes	No	No	No

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

segregation (noun)	separation (noun)
the act of segregating or sequestering	the social act of separating or parting company
a social system that provides separate facilities for minority groups	the act of dividing or disconnecting
(genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes	(law) the cessation of cohabitation of man and wife (either by mutual agreement or under a court order)
	sorting one thing from others
	the distance between things
	coming apart
	the termination of employment (by resignation or dismissal)
	the space where a division or parting occurs
	the state of lacking unity