Cherry is a Soc in the movie who is not in the book. He is friends with Bob and Randy and is part of the group that attacks Johnny and Ponyboy.
Bob's Death
In the book, Bob is killed by Johnny with a switchblade. In the movie, he is killed by Johnny with a gun.
The Church Scene
In the book, Dally and Johnny hide out in a church after the rumble. In the movie, they hide out in an abandoned church.
The Courthouse Scene
In the book, the trial for Johnny and Ponyboy is held in a courtroom. In the movie, it is held in a judge's chambers.
The Ending
In the book, the story ends with Ponyboy recovering from his injuries and reflecting on the events of the novel. In the movie, the story ends with Ponyboy and Johnny walking down the street together, talking about their future.