A somewhat formal term for books and publications, often used in official or commercial contexts.
This library holds many valuable books.
新刊書籍のコーナーは二階にあります。
The new publications section is on the second floor.
That publishing company publishes many books every year.
The budget for purchasing books to use in the library has been decided.
This library lends out tens of thousands of books each year.
Many books have been digitized and can now be read easily.
書籍 is a neutral term for books as published items in general, while 著書 highlights the book as a specific person's own written work.
book cipher; Ottendorf cipher
ebook; electronic book; digital book
digital book; e-book