Jim Crow, age group, alien, apartheid, band, battalion, bevy, body, brigade, bunch, cabal, cast, clique, cohort, color bar, company, complement, contingent, corps, coterie, covey, crew, crowd, detachment, detail, division, ethnocentrism, exclusiveness, faction, fleet, foreigner, gang, group, grouping, groupment, in-group, insularity, insulation, isolation, junta, know-nothingism, mob, movement, narrowness, outcast, outfit, outsider, pack, parochialism, party, peer group, persona non grata, phalanx, platoon, posse, quarantine, race hatred, racial segregation, regiment, salon, seclusion, segregation, separation, set, snobbishness, squad, stable, stranger, string, team, tightness, tribe, troop, troupe, wing, xenophobia