rubbing : Abrasion or wear to the surface. Usually used in reference to a book's boards or dust-jacket.

trade paperback : Often used to indicate any paperback book that is somewhat larger than a mass-market paperback.

tight : Used to mean that the binding of a book has not been overly loosened by frequent use.

crisp : A term often used to indicate a book's new-like condition. Indicates that the hinges are not loosened. A book described as crisp will not have 'well-read' pages, i.e., where the book will naturally open to certain pages or sections.

bumped : Indicates that the affected part of the book has been impacted in such a way so as to cause a flattening, indention, or light bending.

shelfwear : Minor wear resulting from a book being place on, and taken from a bookshelf, especially along the bottom edge.