* The book is told from the perspective of Georgia Nicholson, while the film is told from the perspective of Robbie. This results in some changes in the point of view of the story, as well as the events that are included.
* The book includes a number of subplots that are not present in the film, such as Georgia's relationships with her parents and her best friend, Jas.
* The film makes a number of changes to the character of Georgia, including her age (she is 14 in the book and 16 in the film) and her personality (she is more outspoken and confident in the film).
* The film also makes a number of changes to the plot, such as the way that Georgia meets Robbie and the way that their relationship develops.
Overall, the book and film of Angus, Thongs and Perfect Snogging are quite different experiences. The book is a more comprehensive and detailed story, while the film is a more streamlined and focused adaptation. Both are enjoyable in their own way, and fans of the book will likely find something to enjoy in the film, even if it does not perfectly match their expectations.