There are several synonyms for the word "bookholder" depending on the context. Some common synonyms are book stand, bookrest, book rack, bookshelf, bookcase, and book support. A book stand is a device used to hold a book in an upright position, typically for reading. A bookrest is a flat surface that supports a book while reading or writing. A book rack is a shelf used for storing books, and a bookshelf is a piece of furniture used for the same purpose. A bookcase is a type of bookshelf with enclosed sides and doors, and a book support is any device used to keep a book open or in place.