Bookbinding is an ancient craft that involves the binding of books and other documents. The materials used in bookbinding include GUM, roan, SPINE, GLUE, buckram, MOROCCO, AWL, and TIN. GUM is a sticky substance used to adhere paper and cloth to the SPINE of a book. Roan is a type of leather used to cover the SPINE and boards of a book. SPINE is the part of the book that holds the pages together. GLUE is used to attach the SPINE to the boards of the book. Buckram is a type of cloth used to cover the SPINE and boards of a book. MOROCCO is a type of leather used to cover the SPINE and boards of a book. An AWL is a tool used to punch holes in the SPINE of a book. TIN is a metal used to reinforce the SPINE of a book. All of these materials are essential for bookbinding and help to create a durable and attractive book.