Are hills a type of mountain?

Answer 1

Generally hills and mountains are categorized differently. To be considered a mountain, a hill must be higher than a given height above sea level. This height is rather subjective though, sometimes being over 1000 ft., sometimes being over 2000 ft., etc.

Answer 2

No, hills and mountains are different landforms. Hills are smaller, with less elevation and a more gradual slope compared to mountains which are higher in elevation and have steeper slopes.