Brainliesttt who has read the novel, "the boy in the striped pajamas? " answer if you have, i have some questions about it. : )

that's a lot of reading foo

explanation:

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."