a landscape unit that denotes origin and shape, such as a floodplain, river terrace, or till plain.

combinations of slope and elevation that produce the shape and form of the land.

Shape, form and nature of the Earth's surface.

Any feature of Earth's surface having a distinct shape and origin. Landforms include major features (such as continents, ocean basins, plains, plateaus, and mountain ranges) and minor features (such as hills, valleys, slopes, drumlins, and dunes). Collectively, the landforms of Earth constitute the entire surface configuration of the planet.