General terms:
* Butte: A steep-sided hill that is smaller than a mesa and often has a flat top.
* Hill: A general term for any raised area of land that is smaller than a mountain.
* Knob: A small, rounded hill.
* Peak: The pointed top of a hill or mountain.
More specific terms:
* Erosional remnant: A hill that has been formed by the erosion of surrounding land.
* Volcanic cone: A hill formed by the accumulation of volcanic material.
* Inselberg: An isolated hill or mountain that rises abruptly from a flat plain, often found in arid or semi-arid regions.
Regional terms:
* Hogback: A narrow, steep-sided ridge that is often found in areas of sedimentary rock.
* Mesa: A large, flat-topped hill with steep sides, often found in the American Southwest.
* Kopje: A small, rounded hill that is often found in Africa.
The best term to use will depend on the specific context and the characteristics of the hill in question.
