Land above sea level could be anything from flat lands to a plateau. It depends on the location of the sea and land.
If the water level of a beach is above sea level, it is called "high tide."
Above sea level.
plateau, tabel land or mesa
It is called tableland, an area of highland, usually consisting of relatively flat terrain. Another term is plateau. A smaller flat-topped landform is a mesa.
Above sea level
the height of land above or below the level of the ocean or sea level
continent
The height above or below sea level is "elevation". Altitude is used only for distance above sea level.
The sea is at a particular level compared to land. Most land is above sea level (or it would be under the sea or very far inland). If you are a mile above sea level, then you are a mile above where the sea would be if there was no land there.
We call this "elevation".
100% of its land holdings are above sea level
Dry land is usually above sea level.
The elevation. This varies depending on where the land is. Some land is below sea level, some is way above.
A Plateau
plateu
Above the sea level
If the water level of a beach is above sea level, it is called "high tide."