The term 'basement' is used to refer to the lowest level of a building, typically below ground level. It can also be referred to as the FLOOR, FOUNDATION, FOOTING, BOTTOM, CELLAR, MILDEW, and areaway. The FLOOR is the BOTTOM-most surface of a room, usually made of wood, tile, or carpet. The FOUNDATION is the structural base of a building, which supports the entire structure. FOOTING is the part of the FOUNDATION that is below the surface of the ground. The BOTTOM is the lowest part of something, such as the basement. The CELLAR is an underground room, often used for storage. MILDEW is a type of fungus that grows in damp, dark places, such as basements. An areaway is an area between the basement and the ground.