Booklet: Typically less than 100 printed pages, usually bound together by staples in its folded spine, but sometimes glued.
Hardcover: A book bound in stiff paperboards that may be covered in cloth, plastic, paper, or leather. It usually is wrapped in a paper cover, called a jacket, used to protect a book in transport.
Hardcover Padded: A book bound in stiff paperboards with added cushion. Usually used to bind gift books.
Softcover: A book bound with a nonrigid paper cover.
Gatefold Softcover: A book bound with a nonrigid paper cover that is wider than the book's pages, to allow for the folding of the front and back "flaps" into themselves, to lend a more formal look to the book.
Mass Market: A paper covered book mass-produced to a small standard size (usually as large as an adult's hand) for sale from racks in various retail outlets.
Layflat: A book in which all pages are glued in such a way as to form a spine while also allowing the pages to easily lay flat when open.
Spiral: A book in which all pages, including paper covers, have been multi-hole-punched and bound with a circular wire or strip to allow the pages to easily lay flat when open.
Audio: An author's content produced specifically to be listened to by means of audio cassette, audio CD, MP3, or digital download.
Video/Film: An author's content produced to be enjoyed through seeing as well as listening by means of VHS, DVD, or CD-ROM.
CD-ROM: A work designed to be used on a computer.
Digital Download: Works that are available to download from the Internet into personal computers or mobile devices.
Curriculum Kit: A collection of media in one edition that might include a hardcover or softcover book, CD-ROM, DVD, VHS, and other material to form a self-contained learning unit.
Flashcard: A work printed on individual hand-held cards that can be easily displayed to aid in learning.
Laminated Sheet: A single work covered by a thin clear plastic sheeting for rigidity, making it easy to handle and read both sides. Used primarily in teaching/learning situations.
Leather Definitions: Leather-Look™: An inexpensive material that has been coated and embossed to look like leather.
Premium Leather-Look™: Imitation leather made to look like leather with a quality binding.
Italian Duo-Tone™: Soft, supple, two-tone simulated leather.
Bonded Leather: Genuine leather pieces "bonded" with latex, dyed, cut and embossed with a leather grain. This extremely durable material is supple and pleasant to hold, with many of the full characteristics of full leather. It's designed to hold up for about 10 years. Zondervan's bonded leather Bible covers have 90% genuine leather fiber in them, while many others have less than that.
Premium Bonded Leather: Bonded leather that goes through a special and more expensive manufacturing process to give the leather a soft touch and to look like calfskin.
Genuine Leather or Top Grain Leather: Leather cover from the top or outside of a "hide." Usually pigskin, this 100% leather is a superior binding material that gives a lifetime of wear and consistent quality.
Cowhide: A step up in quality from Genuine Leather or Top Grain Leather, from the hide of a cow.
Calfskin: Luxurious, but tough material highly praised for its distinctive natural grain and rich color shading, long-lasting, and suppleness increases with use.
Morocco Leather: Highest quality goatskin; very supple, durable, and long-wearing. French Morocco is from a high-grade split sheepskin, slightly thinner than other grades of leather. Flexible and soft even when new, but wears well and will last a long time.
European Leather: A premium bonded leather finished in either a tone-on-tone color or a two-color with stitching.