Book

Books are a house of literature and belong to both domains, one of the few entirely-physical mediae and duo domain houses. They're also by far the oldest out of all mediae, being created in the third millennium in an Asian country (surprisingly not China). Books consist of a cover (hard or soft), pages with words (pictures may be included), and a spine to hold the pages all together. Some of the most recognizable franchises in history have originated in book form.