noun
mountain
MOUN-tun/ˈmaʊntn/
A large natural rise of land, higher than a hill.
Snow rests near the mountain's rocky summit, far above the trees.

Etymology
Old French montaigne supplied the name for elevated land. English once applied mountain even to fairly low hills when they stood prominently, before the word became restricted to much higher elevations.
In context
there is a mountain made of diamond it's two miles high two miles wide and two miles deep every hundred years or so a little bird comes along and sharpens its beak on the peak
More examples
- The trail winds up the mountain through a pine forest.
- We spend our summer vacations hiking in the mountains.
- A mountain range separates the two valleys.
Forms
mountain · mountains
mountainous adjective — Having many mountains or resembling a mountain.
mountaineer noun — A person who climbs mountains for sport.