Zach
The word mountain can be used as an adjective. You might have a mountain bike, or mountain gear, or you might hike a mountain pass or trail.
col or gap are used instead of mountain pass as well
The word "col" means a pass between mountain peaks.
In the King James version the word 'mountain' appears 136 times the word 'mountains' appears 178 times and, although it is not always short for "mountain", the word 'mount' appears 263 times
It was a treacherous hike to the top of the mountain.
The German word for mountain is "Berg".
The adjective for the word "mountain" is "mountainous".
The African Luhya word for the English term 'mountain' is "eshikuluu".
A synonym for mountain could possibly be a hill.
The South African word meaning mountain is "koppie."
The base word of mountaineering is "mountain."
Mountains don't have a "purpose". They're the results of millions of years of geological interactions between tectonic plates. A mountain can be used as a natural border but that's not the definition of the word "purpose".