1, different uses: junior high school mathematical shape diagram is a simplified two-dimensional figure representing the shape of an object, while view is the projection of the object in different directions, which is used to show all aspects of the object.

2. Description is related: both shape diagrams and views in junior high school mathematics are used to describe and express the shape and structure of objects. According to the shape diagrams, views can be drawn to show the appearance of objects more accurately.