The term 'BED PART' refers to the components of a bed. A headboard is a board at the head of the bed, usually made of wood or metal, that serves as a decorative backdrop and provides support for the pillows. A SLAT is a thin strip of wood or metal that is used to support the MATTRESS. A MATTRESS is a large pad filled with material such as foam, cotton, or springs, that is placed on top of the bed frame and provides a comfortable sleeping surface.