Softcovers is a term used to describe books that have flexible and lightweight covers. However, there are several synonyms for this word that can be used interchangeably depending on the context. Some of the most common synonyms include paperback, pocketbook, trade paperback, and softback. A paperback is a book that is bound using glue or staples, whereas a pocketbook is a small book that can fit into a pocket. A trade paperback is a larger version of a paperback that is typically used for trade or educational purposes. A softback is a book that has a flexible cover made of paper or cloth. All of these terms can be used in place of softcovers to describe books with light and flexible covers.