A realm encompassing different types of written works, distinguished by distinct styles, forms, and subjects. This broad category comprises various book genres, from crime to romance, each with its unique conventions and attributes. It involves literary agents who serve as intermediaries between authors and publishers, bibliographies that provide detailed lists of works consulted or mentioned in a book, and academic texts that contribute to scholarly discourse. This category also encompasses authors who create these works and books, the primary medium through which narratives, ideas, and knowledge are conveyed.