One difference between a book in a movie is that with a book you are

Watching a directors interpretation of the events of a story
Watching multiple people perform in interpretation of the events of a story
Listening to the voice is an attitude of many different characters
Interpreting an authors words, and using imagination to picture events

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A book and a movie are both forms of media that can convey a story or message. However, one key difference is that a book relies on written language and requires the reader to use their imagination to visualize the story, while a movie conveys the story through visual and auditory cues that are created by filmmakers. Additionally, a movie often has the added dimension of actors’ performances and music, whereas a book relies solely on the written word.