集める【あつめる】
to collect, to assemble, to gather
集まる【あつまる】
to gather, to collect, to assemble
集中【しゅうちゅう】
concentration (on a task), focusing one's attention, concentration (of population, buildings, power, etc.), centralization, convergence, focus (of a debate, questions, etc.), within a collection of works
集団【しゅうだん】
group, mass
集合【しゅうごう】
meeting up, gathering, assembly, set
結集【けっしゅう】
concentration (of efforts, forces, etc.), gathering together, regimentation, marshalling, mobilization
召集【しょうしゅう】
convening, calling together (e.g. parliament), call-up (for military service)
集計【しゅうけい】
totalization, totalisation, aggregation, tally (e.g. of votes), adding up, summing up
写真集【しゃしんしゅう】
photo book (esp. one featuring photos of female celebrities, models), photobook
歌集【かしゅう】
collection of waka poems, anthology, songbook
全集【ぜんしゅう】
complete works, complete collection, complete series
集積【しゅうせき】
accumulation
集い【つどい】
meeting, get-together (e.g. among friends)
詩集【ししゅう】
poetry anthology, collection of poems, collected poems
集落【しゅうらく】
settlement, village, community, town, (bacterial) colony
集約【しゅうやく】
putting together (e.g. opinions), gathering, collecting, aggregating, summarizing, integrating
句集【くしゅう】
collection of haiku poems
中央集権【ちゅうおうしゅうけん】
centralized authoritarian rule, centralised authoritarian rule
集荷【しゅうか】
collection of cargo (esp. produce, etc.), cargo booking
密集【みっしゅう】
crowding together, clustering together, close formation, swarm
