集合|しゅうごうshuugou[0]heiban (flat)

1. noun, suru verb, intransitive verbmeeting up; gathering; assembly
   隊長たいちょうは部下ぶかに直ただちに集合しゅうごうするように命令めいれいした。↗

   The captain ordered his men to gather at once.
2. noun, suru verb, intransitive verb, mathset

• Synonym会合かいごうNeutralGathering in one place for a meeting etc.; also coming across or converging (「定例会合」). 集合 stresses people or things concentrating at one spot.
• Synonym集会しゅうかいNeutralMany people assembling for a common purpose, e.g. 「全校集会」 or 「抗議集会」; 集合 stresses assembling at a place.
• Synonym集いつどいWrittenWritten-style word for a gathering (「市民の集い」), often used in event names; 集合 is the act of assembling in one place.
• Synonym集うつどうWrittenWritten, elegant verb for people coming together (「若者が集う」); 集合 leans toward assembling as arranged.
• Synonym会するかいするWrittenFormal word for people meeting or gathering (「一堂に会する」), mostly in formal settings.
• Synonym参集さんしゅうFormalFormal: coming to a place and assembling; also used in polite invitations (「ご参集ください」).
• Synonym寄り集まるよりあつまるNeutralClustering together in one place (「寄り集まって話す」), mostly people or small things.
• Synonym集まりあつまりNeutralNoun for a gathering (「集まりに出る」), common in speech.
• Synonym集結しゅうけつNeutralMassing of troops or forces (「兵力を集結する」).
• Synonym会同かいどうWrittenFormal written word for assembling to meet; rare.
• Related集まるあつまるNeutralEveryday verb for gathering (「人が集まる」), the most common in daily use; 集合 can also be 「集合する」, leaning to assembling as arranged.
• Related集めるあつめるNeutralTransitive verb: to summon people or collect things (「人を集める」).
• Related寄り合うよりあうNeutralPeople gathering in one place (「寄り合って話す」), less common; 集合 leans to assembling by arrangement.
• RelatedアセンブリNeutralLoanword for an assembled unit or assembly language; rare in the sense of a gathering.
• Antonym解散かいさんNeutralAntonym: breaking up or dispersing (「現地集合、現地解散」).
• Antonym分散ぶんさんNeutralAntonym: scattering or dispersing.

Use 「集合」 for assembling at an agreed spot or the math term (「駅前に集合」, 「集合写真」). In everyday speech say 「集まる」. For a meeting use 「会合」, for a gathering with a shared purpose 「集会」, for troops massing 「集結」. 「集い」/「集う」 are written-style words for gatherings. The opposites are 「解散」 and 「分散」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 人ひとや物ものが集あつまること。
2. 集あつまって一体いったいとして取り扱とりあつかわれるもの。集合体しゅうごうたい。
3. ものの集あつまりで、各々おのおののものがたがいに同一どういつか異ことなるか、且かつ各々おのおののものがその集あつまりに属ぞくしているかどうかが、一意いちいに決きまっているような集あつまり。集合しゅうごうに属ぞくする各々おのおののものを元もとまたは要素ようそという。
4. 人ひとを集あつめる時ときの掛け声かけごえ。