segregation
n//sɛɡɹəˈɡeɪ̯ʃən//segregation
(mineralogy) Separation from a mass, and gathering about centers or into cavities at hand through cohesive or adhesive attraction or the crystallizing process.
(sociology) The separation of people (geographically, residentially, or in businesses, public transit, etc) into various categories which occurs due to social forces (culture, etc).