segregation

The act of setting apart and organizing things based upon their characteristics.

The separation of people based upon race, sex, religion, or other identity in institutions.

The fact that one is gay or one's brother is gay […] — this has less influence on the average HK person's attention or attitude than how he or she finds a job, the way he lives and the way he eats, which is like New York or oter large cities. There tends to be a segregation between a person's private life and his job or other affairs. It does not mean that they are liberal, just that city life fosters this individualism.

The setting apart in Mendelian inheritance of alleles, such that each parent passes only one allele to its offspring.

Separation from a mass, and gathering about centers or into cavities at hand through cohesive or adhesive attraction or the crystallizing process.

The separation of people (geographically, residentially, or in businesses, public transit, etc) into racial or other categories (e.g. religion, sex).