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Besides serving an aesthetic function, columns also proved their worth in durability and practicality. In many Greek Revival, Georgian, and Classical Revival homes, columns supported the roof over a portico or a porch. These sloping roofs provided areas of continuous shade during the hot and muggy times of year. A decorative strip called a frieze was often located just above the capital, or upper portion of the column. The symbolic colonnade, sometimes found lining the facade, added to the symmetry of the homes, which usually featured evenly spaced windows and a central door.
A pillar is similar to a column which is a vertical support structure in architecture, but the base section is any shape but circular.
