Look at a mountain.
It has three parts.
What is the bottom of a mountain?
It is called the foot of the mountain.
What is the side of a mountain?
It is called the face of the mountain.
What is the top of a mountain?
It is called the peak of the mountain.
Words
part 部分
a piece of feature of something such as an object, area, event, or period of time
bottom 底部
the lowest part of something
