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

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

f/f : Fine condition book, with fine condition dust jacket. Fine condition is defined by AB Bookman's Weekly as "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, this should be noted."