The quality of wholeness or oneness that is achieved through the effective use of the elements and principles of design. A totality that combines all of its parts into one complete, cohesive whole. Often it is realized through a deliberate or intuitive balancing of harmony and variety. However, this balance does not have to be of equal proportions. Harmony might outweigh variety, or variety might outweigh harmony. Harmony aids efforts to blend picture parts together to form a whole. Variety adds visual interest to this unified whole. A composition is unified when the relationships between its parts interact to create a sense that no portion of the composition may be changed without altering the aesthetic integrity and meaning of the artwork. When unity is achieved with insufficient harmony and variety, the result is monotony. Unity is largely synonymous with coherence.Also see comparison, homogeneity, horror vacui, and interdisciplinary.