assembled, met, forgathered, congregated, joined, rallied, crowded together, thronged, collected, united, associated, swarmed, huddled, grouped, massed, amassed, accumulated, aggregated, picked, garnered, harvested, stored, gleaned, hoarded, culled, mustered, combined, brought together, convened, convoked, summoned, reunited, compiled, collated, mobilized, lumped together, amalgamated, incorporated, collocated, raked up, rounded up, marshaled, concentrated, heaped, stacked, piled, stowed away.
Antonyms scattered*, dispersed, separated.