Shape: is the external appearance of an object or element in a obejct

-Natura shapes: they ate the ones related to nature they haven’t  created by any human
-Artificial shapes: shapes which have been created by humans.
-Organic: shapes: they are shapes that have irregular profile  as well s their inner Surface: Organic shapes are usually natural.
-Flat shapes: they have two dimensions such a paper sheet 
-Form: they: are volumetric shapes, they appear and are three dimensional.