mass

cattle, proletariat, rabble, rabblement, ragtag and bobtail, riffraff, rout, scum, tag, rag, and bobtail (or tagrag and bobtail), trash, unwashed

bourgeoisie, middle class

epidemic, plague, rash

bonanza, embarrassment, excess, overabundance, overage, overkill, overmuch, oversupply, plethora, redundancy, superabundance, superfluity, surfeit, surplus

deluge, flood, overflow

army, bevy, cram, crowd, crush, drove, flock, herd, horde, host, legion, mob, multitude, press, score, sea, swarm, throng

gazillion, jillion, kazillion, million, thousands, trillion, zillion

aggregate, amount, bulk, quantity, quantum, volume

item, object, thing

material, stuff, substance

entirety, totality, whole

majority

aggregate, amount, entirety, quantum, sum, sum total, total, totality, whole

bottom, essence, essentiality, marrow, meat, nature, pith, quintessence, root, soul, stuff, substance

center, heart, hub, kernel, middle, nucleus, nut, seat

affair, argument, burden, crux, focus, gist, nub, pitch, point, purport

matter, motif, subject, text, theme, topic

plurality

maximum, most

abundance, heap, loads, lot, much, oodles, plenty, profusion, reams, scads, wealth

masses, millions, rabble, rabblement, riffraff

gaggle

heap, mountain, pile

jam, logjam