This is the 11205th most frequent Russian word.
грунт
Soil; ground; foundation.
Here, 'грунт' means 'soil', referring to the layer of earth suitable for growing plants.
Грунт на даче был плодородным.
The soil at the summer house was fertile.
The term 'грунт' is again used to mean 'soil', specifically focusing on its suitability for agriculture.
Этот грунт идеально подходит для посадки овощей.
This soil is perfect for planting vegetables.
In this case, 'грунт' metaphorically refers to 'groundwork' or essential basis for the project's success.