 The Greek writer Theophrastus, who flourished during the 4th century BCE, uses "papyros" when referring to the plant used as a foodstuff and "byblos" for the same plant when used for nonfood products, such as cordage, basketry, or writing surfaces.The more specific term βίβλος "biblos", which finds its way into English in such words as 'bibliography', 'bibliophile', and 'bible', refers to the inner bark of the papyrus plant.