General Terms:
* Sand dune: This is the most general term, encompassing any hill of sand created by wind.
* Sandhill: This term is often used interchangeably with "sand dune," but it can also refer to a larger area of dunes.
Specific Types of Dunes:
* Barchan: A crescent-shaped dune with horns pointing downwind.
* Transverse dune: A long, linear dune oriented perpendicular to the prevailing wind.
* Longitudinal dune: A long, linear dune oriented parallel to the prevailing wind.
* Star dune: A complex dune with multiple arms that radiate from a central point.
* Parabolic dune: A U-shaped dune with arms pointing upwind, often found near coastal areas.
* Seif dune: A long, linear dune with a sharp crest that resembles a sword.
Other Terms:
* Sand drift: A smaller, temporary accumulation of sand.
* Ripple mark: A small, wave-like pattern formed on the surface of sand by wind or water.
The most appropriate name will depend on the specific features of the mound or crescent of sand in question.
