They are both higher than sea level.
mountains are a alot higher then hills and hills are just inclined areas
Yes, deserts may have hills and mountains as well as valleys and plains and rivers.
hills and mountains
Hills are smaller in size and elevation compared to mountains. They typically have a rounded or gentle slope, while mountains are taller and have steeper sides. Hills are often found in lower elevations and are easier to climb than mountains.
Mountains and hills underwater can be bigger than the mountains and hills on land.
Between hills and mountains valleys are to be found.
nilgiri hills
Colombia has hills and lots of mountains.
An area of hills and mountains is called a mountain range.
More hills and mountains can be found in Virginia than in Kentucky.
A valley is the low area between two mountains or hills.
Uruguay has no mountains but it has many hills.