Bibliography (from Ancient Greek: βιβλίον, romanized: biblion, lit. 'book' and -γραφία, -graphía, 'writing'), as a discipline, is traditionally the academic study of books as physical, cultural objects; in this sense, it is also known as bibliology (from Ancient Greek: -λογία, romanized: -logía). English author and bibliographer John Carter describes bibliography as a word having two senses, one, a list of books for further study or of works consulted by an author (enumerative bibliography); the other, one applicable for collectors, is "the study of books as physical objects" and "the systematic description of books as objects" (descriptive bibliography).