Differences between The Book Thief and The Diary of a Young Girl?

"The Book Thief" by Markus Zusak is a work of fiction that follows the life of a young girl in Nazi Germany who steals books, while "The Diary of a Young Girl" by Anne Frank is a non-fiction diary written by a Jewish girl hiding from the Nazis in the Netherlands. Both books provide insights into life during World War II, but one is a novel while the other is a firsthand account of historical events.