purdah vs sex segregation

purdah and sex segregation both are nouns.

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

As nouns, purdah and sex segregation are synonyms defined as:

purdah and sex segregation: the traditional Hindu or Muslim system of keeping women secluded

purdah (noun)	sex segregation (noun)
a screen used in India to separate women from men or strangers	the traditional Hindu or Muslim system of keeping women secluded
the traditional Hindu or Muslim system of keeping women secluded
a state of social isolation