Bibliognost is a rare term used to describe a person with extensive knowledge of books and their trade. However, there are several other terms that can be used synonymously. Book collector, bibliophile, bibliomaniac and bookish are a few terms that describe a person with a deep love and knowledge of books. A bibliographer or book historian is someone who studies and writes about books, while a bookbinder or book conservator is an expert in preserving and repairing them. In general, anyone who is passionate about books can be described as a bibliognost or one of its many synonyms.