Regime vs. Regimen
What Are Their Differences?
These two are only similar in that, back in the old days, they had the same meaning. However, nowadays, 'regime' refers to the governing system in any country, whereas, 'regimen' refers to any kind of diet with the aim of improving your physical health.
Differences
'Regime' refers to the government in a country, while, 'regiment' refers to going on a diet to balance your nutrition. Look at the examples below:
Nothing is permanent, not even this regime.
Every time I think about starting a regimen, my stomach feels like having a creamy cake.
Similarities
Back in the old days, both referred to the governing system in a country.
Are They Interchangeable?
Since they have different usages nowadays, they cannot be used interchangeably. Compare:
My new regimen includes drinking 8 to 10 glasses of water every day.
X My new regime includes drinking 8 to 10 glasses of water every day.
Comments
(2)Thanks for the feedback. It's fixed!

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