Savannah land refers to a type of biome characterized by grasslands with scattered trees and shrubs. It is typically found in tropical or subtropical regions with distinct wet and dry seasons. Savannahs are home to diverse wildlife and are important ecosystems for biodiversity.
Relatively flat, raised areas of land called plateaus.
A shield volcano, called Mauna Loa
Those would be called lakes.
On land, this forms a rift valley. When the surface is submerged, it is called seafloor spreading.
Generally, savannahs are a semi-arid transition zone between a desert and another biome.
Rift valley
trench
A hot air mass that forms over land is called a continental air mass.
A funnel shaped windstorm that forms over land is called a tornado. Tornadoes are characterized by a rotating column of air that extends from a thunderstorm to the ground, with winds that can reach extreme speeds.
Land surrounded by water is an island. There are similar land forms such as peninsulas that are not totally surrounded, but connected to the mainland.
sedimentation