land
The Italian word for 'land' is 'terra'. It is a noun that can be used to refer to the ground, soil, or earth. It can also be used to refer to a country or nation. For example, 'La mia terra' means 'My land' or 'My country'.
The Earth is the third planet from the sun.
In this context, 'terra' is used to refer to the Earth, our planet. This statement is a generic factual information used often when talking about the solar system.
My grandparents live in the countryside and cultivate the land.
In this example, 'terra' is used to refer to soil or land. Cultivating the land means that the grandparents are probably involved in farming or some sort of agricultural activity.
After the earthquake, there were many cracks in the ground.
Here, 'terra' refers to the ground. The phrase indicates the impact of an earthquake, causing visible cracks on the surface of the ground.