CORD FIBER is a type of fiber used to make rope, twine, and other strong materials. ISTLE (5 letters) is a type of cord fiber made from the leaves of the agave plant. SISAL (5 letters) is another type of cord fiber made from the leaves of the SISAL plant. HEMP (4 letters) is a type of cord fiber made from the stem of the HEMP plant. All three types of cord fiber are strong and durable, making them ideal for use in rope, twine, and other materials.