Plain
Flat open land is called a plain. A plain is a flat area with few trees. They can occur as lowlands and at the bottom of valleys, but can also be on plateaus or uplands at high elevations.
An area of land completely surrounded by water is called an island.
Swarm
a flood
An uninhabited area is an area that is uninhabited; no one lives in the area. The area can be called deserted, unsettled, waste land, vacant, unoccupied, empty or unpopulated.
Flat open land is called a plain. A plain is a flat area with few trees. They can occur as lowlands and at the bottom of valleys, but can also be on plateaus or uplands at high elevations.
If it is a country surrounded by land and so having no coast, it is said to be landlocked. An open of land area surrounded by a forest is called a glade or meadow. You can have valleys and basins in terms of geographical forms of land surrounded by other kinds of land.
A land area that contains two continents is called an isthmus. It serves as a narrow strip of land connecting two larger landmasses, separating two bodies of water. Examples include the Isthmus of Panama connecting North and South America, and the Isthmus of Suez connecting Africa and Asia.
An area of land owned by a country is called territory.
A moor is an open area of land.
a broad area of flat or gently rolling land is called a plain.
A massive land area is called a continent. The continents are North America, South America, Europe, Asia, Africa, Antarctica, and Australia.
A pointed area of land sticking out into the sea is called a "cape."
An area of land completely surrounded by water is called an island.
An area where land and water meet is called a shoreline.
Agricultural field or farmland is an open area of land used for farming activities such as crop cultivation or animal husbandry.
That type of land is commonly known as a prairie or a grassland. It is characterized by its open and expansive terrain with minimal tree coverage.