mass; multitude; the masses

community; colony

group of islands; archipelago

mountains; a range of hills

to have group sex

(slang) to have group sex

creator and admin (of an online group)

collaborative software

to send to multiple recipients; mass mailout; to occur in a clustered fashion

(neologism, attested by 2011) to deride a group of people; (of a group of people) to deride (sb)

to live together (in a large group or flock)

the peaks of a mountain range

group scuffle; gang fight

extra (actor engaged to appear in a crowd scene) (abbr. for 群眾演員|群众演员[qun2 zhong4 yan3 yuan2])

to rent to multiple co-tenants, esp. where the number of tenants exceeds what the dwelling is fit to accommodate (i.e. involving subdivision of rooms etc)

group; cohort; cluster

(computing) group chat; to have a group chat

to gather; to congregate; to aggregate

blossom

all flowers; all beauties; all talents

assemblage of talented individuals; ensemble of heroes

community; (science) biocoenosis; ecological community

group theory (math.)

outstanding heroes; warlords vying for supremacy (in former times); stars (of sports or pop music)

to gather; to congregate; to aggregate

earthquake swarm

to fly as a flock or swarm

Gunma (prefecture in Japan)

to do with the masses; mass (meeting, movement etc)

distinguished gathering; a meeting of heroes

letting everyone have their say; taking people's views into account; free expression of different views; (contrasted with 一言堂[yi1 yan2 tang2])

mass (non-government) organization

crowdsourcing; abbr. to 眾包|众包[zhong4 bao1]

mass rally

extra (actor engaged to appear in a crowd scene)

communal organization

the mass line, CCP term for Party policy aimed at broadening and cultivating contacts with the masses

herd immunity

(idiom) to act in concert; to pool ideas and efforts

great heroes pursue deer in the central plains (idiom); fig. many vie for supremacy

lit. a thunder of dragons without a head; fig. a group lacking a leader

mass incident (PRC term for incidents of social unrest, including rioting, melees and petition campaigns)

earthquake swarm

cluster headache

the masses rise to attack it (idiom); Everyone is against the idea.; universally abhorrent