wraps : The paper covering on the outside of a paperback.

vg : Very Good condition. 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. (defined by AB Bookman's Weekly)

plates : Full page illustrations or photographs. Plates are printed separately from the text of the book, and bound in at production. I.e., they are not sewn as parts of gatherings.