They both are similar ,because they both talk about the same people and tell the same story.The book has several differences than the movie like dally dying instantly after being shot by the fuzz ,Johnny’s mom yelling at pony and two-bit those are just a couple of differences in the two there are several more though.
Some friends who are just “greasers” and they keep having problems with the “socs” this problem goes on and on until the finally the “greasers” have enough they have a big rumble and it ends the problem.
Both the movie and the book have two friends that die.
Johnny dies in both the movie and book as well as dally.
In both