dust jacket : A protective and often decorative wrapper, usually made of paper which wraps around the binding of a book.

remainder mark : Usually an ink marking of some sort which indicates that the book was designated a remainder. In most cases, it can be found on the edges of the text block in the form of a marker stripe or a stamp of some sort.

Remainder marks considerably lower the overall collectibility of a title, although, in some cases, they are acceptable to a collector.

Brodart : Generally used to refer to a clear plastic cover that is sometimes added to the dustjacket or outside covering of a book. The name refers to the company by the same name which produces many book repair and archival products.