Textiles are fabrics made from natural or synthetic fibers, whether knitted, woven, bonded, or felted. The fibers are prepared and spun (see spinning) into yarn. This is then formed into fabric by weaving or other methods. Finishing processes include bleaching; calendering; mercerizing; dyeing (see dye), brushing, sizing, fulling, and tentering. Chemical processes are used to impart crease-resistance, fireproofing, stain-resistance, waterproofing, or nonshrink properties.