They are all landforms and all have to do with relief
Plains and mountains are both naturally occurring landforms on Earth's surface. However, that is where their similarities mostly end. Plains are generally flat or gently rolling landscapes, while mountains are characterized by their steep slopes, high elevations, and rugged terrain. Additionally, plains are often associated with agricultural activities and large expanses of open space, while mountains offer unique ecosystems and recreational opportunities.
Mountains and plains both come from nature
Mountains, Plains and valleys are examples of Landforms
How may the lives of people who live in mountains or on plains be different?
Landforms
The Rocky Mountains
Mountains and plains both come from nature
Interior plains and rocky mountains
no mountains but have plains
they are both plains
they are both plains
they are both plains