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

8vo : Short for Octavo, A book whose page size is approximately 8-10 inches tall. The size is based on a sheet of paper 25 inches by 38 inches, the size of paper traditionally used by book printers, which has been folded and cut into 16 pages.. Unfortunately often misunderstood to mean 8 volumes.

half title : The leaf which appears just prior to the title page, and typically contains only the title of the book, although, at times, the author's name and/or other information may appear.