Some writers restrict the terms "Naturalism" and "Realism" for use as labels for period styles of the middle and late nineteenth century in Europe and America, thus making available the terms "naturalism" and "realism," all lowercase, for tendencies of art of any period so long as the works strive for an accurate representation of the visible world. Thus, "Naturalism" is tied to a time and place, whereas "naturalism" is timeless. As well as a major turning point in art.