Classical Roman and Greek architecture can be used to describe most columns and pilasters, while others are used strictly for utility. A 'column' is a free-standing post that supports a floor, roof or balcony. A 'pilaster' is a half column placed directly against a wall.

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Characteristics of Columns & Pilasters:

• Older versions may be made of stone, concrete, brick or wood
• Columns are mostly structural, standing on a solid base and supporting a roof or porch above.
• Pilasters are laid against a wall and may be a half-column, square or round. Modern pilasters may be simply decorative.
• Modern versions of columns and pilasters may be cast concrete, PVC (polyvinyl chloride) plastic or aluminum. Sometimes, a wood or steel support post is covered by a decorative shell that mimics the look of a column.
• Decorative styles of columns and pilasters will follow Classical Orders of Architecture.