How to say "reorganization" in Japanese

• 改革かいかくJLPT N1approx.Common
  noun, suru verb, transitive verbCovers 'reorganization' only in the sense of sweeping reform: fundamentally changing a system, institution, or practice. In most contexts 'reform' or 'reformation' is the closer English rendering.
  「冬ふゆの時代じだい」が大学だいがく改革かいかくの起爆剤きばくざいとなってくれればと思おもう。↗

  So-called "winter time" is expected to enhance the college reform.
• 再編さいへんCommon
  noun, suru verb, transitive verbThe natural choice when 'reorganization' means rearranging an organization or structure — regrouping or reshuffling its existing parts into a new configuration.
• 改装かいそうCommon
  suru verb, transitive verb, no-adjectivePrimarily means remodelling: renovating a building, ship, or interior. Its 'reorganization' sense is marginal — for reorganizing a company or institution this is not the word you want.
  家いえを改装かいそうしてもらいたいのです。↗

  I want you to refurbish the house.
• 改編かいへんCommon
  noun, suru verb, transitive verbCovers reorganization of things put together as content: reworking the arrangement or editing of a program, publication, or the like. It suggests a revised make-up rather than deep structural change.
• 改組かいそCommon
  noun, suru verb, transitive verbReorganization of an organization's structure itself: rebuilding it under a new framework rather than merely adjusting parts. Typical of institutions such as universities or government ministries.

For reorganizing an organization, 再編 rearranges existing parts and 改組 rebuilds the structure itself; 改革 means sweeping reform, 改編 reworks edited content such as programs, and 改装 is really about physical remodelling.

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

• 改革かいかくreform
• 再編さいへんreorganization
• 改装かいそうremodelling
• 改編かいへんreorganization
• 改組かいそreorganization
• 改造かいぞうremodeling
• 改廃かいはいreform and (or) abolition
• 統廃合とうはいごうreorganization (e.g. of a company)
• 再組織さいそしきreorganization
• 再編成さいへんせいreorganization
• 組織再編そしきさいへんreorganization
• 機構改革きこうかいかくreorganization
• 廃合整理はいごうせいりreorganization
• 再構成さいこうせいreconstruction
• 再設さいせつre-establishment
• 再整理さいせいりrearrangement
• 更生こうせいrebirth