組成|そせいsosei[0]heiban (flat)

1. noun, suru verb, transitive verbcomposition; constitution
2. noun, suru verb, transitive verb, chemistrycomposition (of a molecule, compound, etc.); constituent ratio; relative proportion of elements

• Synonym構成こうせいNeutralThe broadest term for what something is made of and how its parts fit together, e.g. 「番組の構成」. 組成 is narrower: chemical proportions or forming a group.
• Synonym編成へんせいNeutralAbout arranging and organizing units, teams or budgets, as in 「予算編成」. The emphasis is on the act of organizing, not on component proportions.
• Synonym成り立ちなりたちNeutralHow something came about — its origin, formation process or makeup, as in 「言葉の成り立ち」; also common in written prose. 組成 centers on what components it contains.
• Synonym結成けっせいNeutralPeople joining together to form a group or organization, as in 「政党を結成」. 組成 leans toward chemistry or finance.
• Synonym合成ごうせいNeutralCombining several things into one, as in 「合成写真」. The focus is on merging, not on the ratio of components.
• SynonymなすWrittenWritten/formal prose: to constitute or form, as in 「群れを成す」「財を成す」, and also to accomplish something. 組成 stresses combination from components.
• Synonym組み立てくみたてNeutralAssembly and the resulting structure of concrete objects, as in 「家具の組み立て」. Leans toward physical things.
• Synonym編制へんせいWrittenWritten/formal prose term for organizing armies or groups; rare, and a homophone of 「編成」.
• Related構造こうぞうNeutralRefers to the internal structure or framework of something, as in 「建物の構造」. 組成 is about which components combine to make it up.
• Related組織そしきNeutralAn organization or institution, and also biological tissue. 組成 focuses on the components themselves.
• Related形成けいせいNeutralThe forming or shaping of something into a certain form, as in 「人格形成」; it can happen naturally. 組成 is about which components make it up.
• Antonym分解ぶんかいNeutralTaking something apart or breaking it down — the opposite of the combining and composing that 組成 describes.

For general talk about what something consists of, 「構成」 is the usual choice; for internal structure, 「構造」. Use 「組成」 for the proportions of components in a compound, as in 「化学組成」, and for forming funds or groups; for taking something apart, 「分解」.

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

1. いくつかの要素ようそ・成分せいぶんから一ひとつのものを組み立くみたてること。主おもに、組織そしきや体制たいせいについて使つかわれる。
2. 化合物かごうぶつや混合物こんごうぶつなどの成分せいぶん、およびそれぞれの成分せいぶんの量りょうの割合わりあい。
3. 〔ある一ひとつのものを〕いくつかの要素ようそ・成分せいぶんから組み立くみたてる。