ひょうし表紙hyoushi
1.

The outermost layer or covering of a book or notebook, designed to protect its contents while also displaying the title, purpose, or other relevant information.

2.

A decorative or protective layer typically made from thick paper, fabric, leather, or plastic that encases the exterior of a written work, serving both functional and aesthetic purposes.

3.

The material that is applied to the front side of a scroll to expose its title when rolled up, serving as the initial point of reference for the work contained within.

Example:

彼は手を伸ばして小さな皮表紙の本をとった。

うらびょうし裏表紙urabyoushi
1.

The part of a book that is located on its back side, usually providing closure to the binding and often displaying information about the book such as the synopsis or publisher details.

2.

The protective covering found at the rear of a book, separate from the front cover, which may also contain illustrations or promotional material relevant to the content within.

3.

The outermost layer on the reverse side of a printed work, serving both a functional purpose to protect the pages and an aesthetic role that might entice readers.

Example:

私は日記の裏表紙に彼の住所を走り書きした。

せびょうし背表紙sebyoushi
1.

The part of a book that covers and protects the edge where the pages are bound together, providing structural support and displaying the title and author.

2.

The vertical edge of a book that is visible when the book is placed on a shelf, typically displaying identifying information like the title and publisher.

3.

The component that facilitates opening and closing of a book, ensuring the pages are held together while allowing for flexibility when reading.