Natural rope fiber is a type of material used for making ropes and other items. HEMP and SISAL are two of the most common natural rope fibers. HEMP is a four-letter word derived from the Cannabis sativa plant, and is known for its strength and durability. SISAL is a five-letter word derived from the Agave sisalana plant, and is also known for its strength and durability. Both HEMP and SISAL are used in a variety of applications, including rope, twine, and fabric.