A Composition is the combining of parts to make up a whole.

A painting is an artistic composition.

Elements of Art and Principles of Art are combined to compose a painting.

The Elements of Art are: Line, Shape, Form, Value, Color, Texture, and Space.

The Principles of Art are: Variety, Contrast, Unity, Movement, Balance, Emphasis, and Rhythm.

Aesthetics is the study of beauty.  An artist strives to make his or her artwork aesthetically pleasing, according to his or her own interpretation of beauty.