Fetching details from the dictionary...

mountain; hill
mine
(mountain) forest
heap; pile; stack; mountain
protruding or high part of an object; crown (of a hat); thread (of a screw); tread (of a tire)
climax; peak; critical point
guess; speculation; gamble
mountain climbing; mountaineering
festival float (esp. one mounted with a decorative halberd)
deck (from which players draw cards); draw pile; stock
wall; wall tile
wild
(criminal) case; crime
あの山はとても高いね。
That mountain is very tall.
来週、友達と山に登りに行きます。
Next week, I'm going mountain climbing with my friends.
週末に友達と山に登りました。
I climbed a mountain with friends on the weekend.