地板 (dì bǎn) refers specifically to the physical floor surface or flooring material (e.g., wood, tile) inside a building. It differs from 地面 (dì miàn), which means 'ground' or 'floor' as a general surface (indoors or outdoors), and from 楼 (lóu) or 层 (céng), which refer to the story/level of a building.