This is the 474th most frequent French word.
régime
A system or plan, often referring to government, diet, or management.
Here, 'régime' is used to refer to a structured eating plan for weight control or health reasons.
Je suis un nouveau régime pour perdre du poids.
I am on a new diet to lose weight.
In this case, 'régime' refers to the governing system or administration of a country.
Le régime politique du pays a beaucoup changé récemment.
The political regime of the country has changed significantly recently.
Here, 'régime' is used to describe a regulated method or system of activity, in this case related to watering practices.