Column orders refer to the styles of columns used in classical architecture, which are characterized by their distinct designs and proportions. The three main types are Doric, Ionic, and Corinthian. Each order has unique features, such as the simplicity of the Doric, the scroll-like volutes of the Ionic, and the elaborate acanthus leaves of the Corinthian. These column orders not only serve a structural purpose but also contribute to the aesthetic appeal of buildings. They are often used in temples, public buildings, and monuments, showcasing the architectural values of ancient civilizations, particularly those of Greece and Rome.