SHAPE

Shape   It is the extremal appearance of an object an element in an image

Natural Shapes   They are the ones related to nature. They haven't been created by human

Artificial Shapes   Shapes which have been created by human or mechamical producers

Organic Shapes   They are shapes that have irregular profile or silhouette as well as there inner surface. Organic shapes are usually material even though

Geometric Shapes   Shapes whose parts follow a mathematic order, laws or patterns

Flat Shapes   They have 2 dimensions such a paper sheet a cinema screen on a carvar

Form   They are volumetric shapes, they appear and are three dimensional