What are some differences between Rumble Fish the book and the movie?

One key difference is the style and tone; the book is more introspective and philosophical, while the movie is more visually stylized and action-oriented. Additionally, the book delves deeper into the characters' inner thoughts and emotions, whereas the movie focuses more on the external conflicts and relationships. The ending of the book and the movie also differ, with the book having a more ambiguous and open-ended conclusion.