The term 'Type of Greek Column' refers to two distinct styles of columns used in Ancient Greek architecture. The Doric style, which is five letters long, is characterized by its simplicity and lack of ornamentation. It is the oldest and most basic of the three Greek orders, and is typically composed of a base, shaft, and capital. The Ionic style, also five letters long, is more ornate than the Doric style and features a base, shaft, and capital, as well as volutes at the top of the capital. This style was developed later than the Doric style and is often seen in temples and other public buildings.