assemblages, assemblies, conferences, congregations, convocations, gatherings, meetings, musters

companies, consorts, coteries, gangs, packscaucuses, forums(also fora), markets, panels, rallies, symposia(or symposiums), synodsaudiences, galleries, grandstands, housescrowds, flocks, hordes, legions, multitudes, presses, swarms, throngscrushes, mobs, rabblements, rabbles