What is referred to as mountain wind?

Question

Question PPL(A) - Private Pilot License - Meteorology

QuizVDS · Accepted Answer

Wind blowing down the mountain side during the night

QuizVDS · Answer

Wind blowing uphill from the valley during daytime

QuizVDS · Answer

Wind blowing uphill from the valley during the night

QuizVDS · Answer

Wind blowing down the mountain side during daytime.

Id 124 - PPL(A) EN - What is referred to as mountain wind?