Abstraction involves extracting common, essential characteristics from a multitude of things while discarding their non-essential features. To abstract, one must make comparisons; without comparison, it is impossible to find the parts that are essentially shared. Abstract art refers to art where the artistic image significantly deviates from or completely abandons the appearance of natural objects. Abstract art is generally considered as an art that does not depict the natural world, instead expressing subjectively through shapes and colors.