In architecture, five types of designs for columns. Three were developed in ancient Greece and adopted by the Romans: Doric, Ionic and Corinthian. Two were introduced by the Romans: composite and Tuscan. Each column has a shaft, capital, and entablature; and with the exception of the Doric, each has a base.Examples: A schematic diagram of the Doric order and a diagram of the Ionic order.Related site: Gli ordini nell'architettura classica (Orders in the Classical Architecture) is an Italian language site. Also see Greek art and Roman art.