1) Aggregations 2) Bands in a Bernstein musical 3) Bands of bad guys 4) Bloods and others 5) Bust targets, sometimes 6) City police concern 7) Crews 8) Crime organizations 9) Criminal collectives 10) Criminal groups 11) Factions in turf wars 12) Factions in West Side Story 13) Groups of laborers 14) Groups of persons 1) Bands 2) Mobs