Sheet piling refers to a type of retaining wall made of steel or concrete that is driven vertically into the ground to provide structural support and prevent soil erosion. There are several synonyms for sheet piling, including piling wall, retaining wall, seawall, bulkhead, and flood protection barrier. Each of these terms describes the same type of structure, but may be used in different contexts, such as coastal engineering, construction, or environmental engineering. Regardless of the term used, sheet piling remains an essential tool for stabilizing slopes, protecting infrastructure, and reducing flood risk in areas exposed to high water levels or soil erosion.