Like anything else related to art; Modern Oil Paintings can come at you in two ways; as abstract oil paintings or as concrete ones. It’s quite easy to tell the difference between a concrete and abstract oil painting. A concrete oil painting is one where most people easily agree with what the subject of the painting is. An abstract oil painting, however, has interpretations unique to the person viewing it. Oil Paintings, such as the Portrait of Dr. Gachet, has a very unique design that deviates from the normal form of how one would recreate an image of a person.