Based on elevation:
* Hill: A hill is a raised area of land, usually with a rounded top, that is lower than a mountain.
* Plateau: A plateau is a large, flat area of land that is raised above the surrounding area.
* Mesa: A mesa is a flat-topped hill with steep sides, often found in desert areas.
Based on other characteristics:
* Valley: A valley is a low area of land between hills or mountains.
* Canyon: A canyon is a deep valley with steep sides, often carved by a river.
* Ridge: A ridge is a long, narrow strip of high ground, often formed by a series of hills or mountains.
* Cliff: A cliff is a steep, vertical rock face.
Based on location:
* Dune: A dune is a hill of sand formed by wind.
* Volcano: A volcano is a mountain formed by the eruption of lava and ash.
Do any of these fit what you were thinking of? Let me know if you'd like to know more about any of them!
