What are the similarities between the movie and the book The Outsiders by S. E. Hinton?

The movie version of S.E. Hinton's novel The Outsiders does have many differences from the book; however, in terms of basic storyline, it is similar enough to the original work to be liked by fans. The big plot points like Darry being the reason Ponyboy runs away with Johnny in the first place are still the same. The attack at the park resulting in the death of Bob, which forces Ponyboy and Johnny to flee town to escape police custody also remains the same. Just like in the book, Dally plays an important part in helping Ponyboy and Johnny while they are on the run. The resulting fire at the church and the deaths of both Dally and Johnny are also depicted in the same way as Hinton's original.
Beyond the big plot points, some of the same themes can be connected from the movie to the book as well. In both works, the loss of Ponyboy's parents causes him to form tight bonds with his friends. The movie also does a good job of depicting the struggles the Greasers face as outcasts from society.