Weft (or, woof) threads are those base threads that run the width of a carpet or rug. The weft threads interlock with the warp threads. The weft threads are commonly (although not exclusively) made of cotton on a woven rug. Weaving garments dates back thousands of years. Leviticus 13:47-59 refers to mold infections in the "warp and woof" of garments. Carpet and rugs are large textiles foundationally crafted upon warp and waft threads.