Criptoria

Ebook is a digitally formatted file that's read on an e-reader like Kindle or an application like Apple Books.

A paperback (also known as softback or softcover) is a type of book characterized by a thick paper or paperboard cover. Their pages are often held together with glue rather than stitches or staples.

A hardcover (also known as hardback or hard-bound) is a type of book that is bound with hard and rigid protective covers and the pages are often strongly held together with stitches and staples.

An audiobook is a sound recording of a book.