Abstract art uses various colors, shapes, forms, and gestural markings to accomplish its impact rather than attempting to provide a precise picture of visual reality. The word abstract, strictly speaking, implies removing or detaching something from something else.  The abstract painting is also used to describe art that employs forms that aren’t derived from any external visual reality, such as geometric shapes or gestural markings. Some artists who work in this pure abstraction prefer labels like concrete art or non-objective art, although, in practice, the term abstract is used interchangeably, and the line between the two isn’t always clear. Abstract painting has been a mainstay of modern art since the…