How to say "coalition" in Japanese

• 連立れんりつCommon
  noun, suru verb, intransitive verbCovers 'coalition' in the political sense: parties joining to form a government. This is the word for coalition governments and similar governing partnerships between political parties.
  新あたらしい連立れんりつ政府せいふはこの難局なんきょくを乗り切のりきろうとしています。↗

  The new coalition government is trying to ride out the storm.
• 連合れんごうJLPT N2approx.Common
  noun, suru verb, transitive verb, intransitive verbAlliance, union or confederation of groups, organizations or nations; covers 'coalition' when separate bodies join forces, as in alliances between countries or federations of unions.
  戦争せんそうは連合軍れんごうぐんの勝利しょうりに終おわった。↗

  The war ended in victory for the Allied Powers.
• 合併がっぺいJLPT N1approx.Common
  noun, suru verb, transitive verb, intransitive verbReally means merger or amalgamation: companies, towns or similar bodies combining into one. For 'coalition' it is seldom the word you want, since a coalition keeps its members distinct.
  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.

Use 連立 for political coalitions, especially parties joining to govern; 連合 for alliances, unions or confederations of groups or nations; 合併 is a merger or amalgamation, not really a coalition.

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

• 連立れんりつcoalition
• 連合れんごうunion
• 合併がっぺいmerger (of companies, towns, etc.)