The Classical era, usually denotes architecture which is could be derived from the principles of Greek and Roman architecture "Five orders". Different styles of classical architecture have existed since the Carolingian Renaissance, and prominently since the Italian Renaissance. Although classical styles of architecture can vary greatly, they can in general all be said to draw on a common "vocabulary" of decorative and constructive elements. In much of the Western world, different classical architectural styles have dominated the history of architecture from the Renaissance until the second world war, and continues to inform many architects to this day.