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Difference between Regime, Regimen and Regiment

Regime, a noun, refers to a government, usually an authoritarian one.

  • The country underwent regime change on its own terms.

Regimen, a noun, refers to a therapeutic treatment, usually including diet and exercise.

  • The benefits of a daily fitness regimen are endless.

Regiment, as a noun, refers to a military unit or large group of people; as a verb, it means to direct or command.

  • The people’s good wishes went to the soldiers of our regiment.
  • They sought to regiment the people and their property.