- Library - is a Publisher's Reinforced Edition - it is a sewn binding.
- Reinforced - is a Publisher's Reinforced Edition (School & Library Edition) & it is sewn, fanned and glued so it is sturdier for the little people.
- Prebound and/or Rebound books are books that come in a paperback form and are then re-bound as a hardcover.
- Trade refers to a Trade Paper or Trade Hardcover which means it's a Publisher's full trade discounted title and not of Mass Market size.
- Audio CD and Compact Disc will primarily be one and the same.