A plain.
plateau
A plateau is a large, mostly flat area that rises above the surrounding land. Plateaus are higher than the surrounding terrain and have steep sides. They can be formed by processes such as erosion, volcanic activity, or tectonic uplift.
A large area of flat grasslands that starts with a "p" is called a plain. Plains are expansive, mostly flat regions with low vegetation that are typically found in the interior regions of continents.
The most usual term for large, flat areas is plains.
A large area of land that is level or that is slightly rolling is called a plain. Plains can occur in lowlands or at higher elevations on plateaus. As they are usually made of fertile soil, plains are very important for an area's agriculture.
A meadow
A plateau
a broad area of flat or gently rolling land is called a plain.
a plain
It is called a plateau
Plateau
A plateau.