A book is a set of sheets of paper, parchment, or similar materials that are fastened together to hinge at one side. ... Writing or images can be printed or drawn on a book's pages. A "journal" is a scholarly periodical aimed at specialists and researchers.

Can a journal article be a book chapter?

Journal articles and book chapters are not interchangeable. You can't (or at least shouldn't) take your published article and insert the text into your book.

What is a journal publication?

Journal publications include studies/articles/papers which are peer-reviewed. ... This means that any article included in a journal, has been very rigorously reviewed against strict criteria and standards by a panel of researchers or scholars in the field.