noun
literary work; book of literature
Refers to a book that is a work of literature, such as a novel, poetry collection, or play, as opposed to a practical or reference book.
彼は毎月一冊の文学書を読むことにしている。
He makes it a rule to read one literary work every month.
この図書館には多くの古典文学書が所蔵されている。
This library holds many classic literary works.
本 is the general word for any book, including non-fiction, textbooks, and manuals. 文学書 is limited to literary works.
Compound of 文学 (ぶんがく, 'literature') and 書 (しょ, 'book' or 'writing').