Point
In design we use points all the time from creating focal points to destination points within a space. So understanding the importance and the effect that points have on viewers and users is critical in development of a successful concept or design. It is possibly the simplest of the primary elements, as it denotes a specific place in space.
Line
Line, like point, is also a very simple concept which when used with purpose and meaning can have a powerful effect on the user. It is basically just a connection between two or more points.
Plane
The third primary element plane is a combination of lines, as it has a width and a height, but no depth.
Volume
Volume as Webster's puts it is the measurable amount of space that is occupied by a three-dimensional object or space. Volume is everywhere an eye can see, as most o the world is comprised of volumetric forms such as counters, rooms, cars, etc.
