How to say "consolidation" in Japanese

• 統一とういつJLPT N2approx.Common
  noun, suru verb, transitive verbCovers consolidation in the sense of unifying separate things into a single whole or making them uniform, as in unifying rules, standards, or groups.
  スコットランドとイングランドの統一とういつは１７０６年ねんに行おこなわれた。↗

  The union of Scotland and England took place in 1706.
• 統合とうごうJLPT N1approx.Common
  noun, suru verb, transitive verbCovers consolidation as integration: combining separate organizations, systems, or departments into one functioning whole, with an emphasis on the parts working together afterward.
  天皇てんのうは国民こくみんの統合とうごうの象徴しょうちょうである。↗

  The Emperor is the symbol of the unity of the people.
• 連結れんけつCommon
  noun, suru verb, transitive verbIts basic senses are connection, linking, and coupling; it matches 'consolidation' only in the accounting phrase for consolidated company accounts, so it is seldom the word you want otherwise.
  ここでも、このアプローチがマシュー・アーノルドの「どこにも連結れんけつがある」という考かんがえに由来ゆらいしていることを見みて取とることができる。↗

  Again, we can see this approach as deriving from Matthew Arnold's idea that everywhere there is connection.
• 合併がっぺいJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbConsolidation in the sense of a merger: two or more companies, towns, or similar entities combining into a single organization.
  ２社しゃは合併がっぺいを計画けいかくしている。↗

  The two companies plan to unite.
• 整理せいりJLPT N3approx.Common
  noun, suru verb, transitive verbMatches 'consolidation' in the sense of sorting things out and clearing them, especially liquidating or settling debts; the nuance is tidying up what has accumulated, not merging entities.

Choose by sense: 統一 for unifying into one whole, 統合 for integrating parts or systems, 合併 for mergers of companies or towns, 連結 only for consolidated company accounts, and 整理 for clearing or settling debts.

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

• 統一とういつunity
• 統合とうごうintegration
• 連結れんけつconnection
• 合併がっぺいmerger (of companies, towns, etc.)
• 圧密あつみつconsolidation
• 整理統合せいりとうごうconsolidation
• コンソリデーションconsolidation
• 廃統合はいとうごうconsolidation (esp. of a market)
• 新設合併しんせつがっぺいconsolidation
• 統廃合とうはいごうreorganization (e.g. of a company)
• 混載こんさいmixed loading
• 斉備せいびcomplete equipment
• 固結こけつhardening
• 一本化いっぽんかunification
• 整理せいりliquidation