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

Fine/VG : A Fine condition book with a Very Good condition dust jacket. Fine approaches the condition of As New, but without being crisp. For the use of the term Fine there must also be no defects, etc., and if the jacket has a small tear, or other defect, or looks worn, those should be noted. Very Good can describe a used book that does show some small signs of wear - but no tears - on either binding or paper. Any defects must be noted.

Biblio : The Greek root for a variety of words referring to the book, such as bibliography, bibliomania, etc. Also, one of the world's largest internet book search services.