“Retaining wall” means a structure designed and constructed to hold soil, earth, or like material in place, or to resist lateral pressure of materials to create or maintain a change in ground elevation. Such walls can be of various types including gravity, cantilevered, anchored, or piling walls and can be comprised of various materials including concrete, stone, or masonry units. The term “retaining wall” does not include fences. (Ord. 6884 § 1 (Exh. 1), 2022.)