Texture

Texture is used to describe the characteristics of an object. Some examples of texture are smooth, rough, bumpy, grainy, sharp, etc.

Texture is divided into two types, they are organic textures and man-made textures. Organic textures are textures that can be found in nature for example the texture in leaf, animal's fur, rock, tree bark, etc.
Man-made textures are textures that cannot be found in nature, they are made by humans, for example steel, glass, cloth, etc.

Again texture can be further divided into four sections, they are abstract textures, invented textures, actual textures and simulated textures.
Abstract textures are textures that created by people using real object as reference then simplify the textures.
Invented textures are textures created by people, they may exist in nature or man- made.
Actual textures are textures that can be felt when touched.
Simulated textures are textures that created by people using real object as reference and they are almost exactly the same as the real object.