Asymmetry (noun)

1. Lack of symmetry or equality between parts.
2. Lack of balance or proportion in a design or composition.

Origin:

Late 18th century: from french asymétrie, or via late latin from greek asummetria, from a- "not" + symmetria "symmetry".

Examples:

1. The building had an asymmetry in its design.
2. The painting had an asymmetry in its composition.
3. The photograph captured the asymmetry of the face.
4. The dress had an asymmetry in its hemline.
5. The garden had an asymmetry in its layout.