How are books made?
Books are made by cutting paper to the right size (that will depend on what sort of book is being made, and the computers know which is which). Then, after the book is written, it's printed out onto the papers. A machine stitches the edges of one side of the papers together to make the book, and a leather or wooden or cardboard cover is glued onto the outside.
Books are made to be read; journals aren't. Books are published; journals aren't. Journals are used to take notes in; books aren't. You can learn something from books; usually you can't from journals. Books can be made for enjoyment; journals aren't. (kind of--be careful with this one) Books can be made for a variety of ages; journals can't.