A column is a vertical, load-bearing structural element, often a rounded shaft with a capital and a base, designed to support a structure above. It can also be non-structural, serving a decorative purpose or as a freestanding monument. Columns are frequently found in classical architecture and are a key element in the design and structure of buildings. 

A column wrap is a decorative or protective covering that is installed around the exterior of a building column, typically made of materials like PVC, polyurethane, or wood. It serves to enhance the appearance of the column, protect it from weather damage, and sometimes provide a barrier against impact from vehicles.