集める【あつめる】
to collect, to assemble, to gather
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
集まる【あつまる】
to gather, to collect, to assemble
集団【しゅうだん】
group, mass
集合【しゅうごう】
meeting up, gathering, assembly, set
集会【しゅうかい】
meeting, assembly, gathering, congregation, convention, rally
集まり【あつまり】
gathering, meeting, assembly, collection, attendance
編集【へんしゅう】
editing, compilation
募集【ぼしゅう】
recruitment, invitation, selection, advertisement, taking applications, raising (funds, donations, etc.), collection, subscription, solicitation, flotation (of shares, loans, etc.)
編集長【へんしゅうちょう】
editor-in-chief
収集【しゅうしゅう】
collecting, accumulating, gathering, collection (of art, stamps, insects, etc.), garbage collection, waste collection
特集【とくしゅう】
feature (e.g. newspaper), special edition, report
集中力【しゅうちゅうりょく】
(powers of) concentration, ability to concentrate
編集者【へんしゅうしゃ】
editor (in publishing, etc.)
全集【ぜんしゅう】
complete works, complete collection, complete series
集落【しゅうらく】
settlement, village, community, town, (bacterial) colony
密集【みっしゅう】
crowding together, clustering together, close formation, swarm
採集【さいしゅう】
collecting, gathering
寄せ集め【よせあつめ】
mishmash, miscellany, medley, jumble, mixture, odds and ends
招集【しょうしゅう】
call, summons, convening, convocation