When Dudley and Harry start heading home, at the beginning of the story, they get attacked by Dementors. In the book, Harry manages to summon his patronus on the third try, saving them both. In the movie, he manages to cast the spell on his first try, but does not manage to summon his patronus.
After the attack in the book, Harry receives several letters concerning his expulsion from Hogwarts (because he used magic in the presence of a muggle), the final letter being the one that announces that he will have a hearing at the Ministry of Magic. In the movie, he receives only one, the latter, letter (I am so proud of the wording here).
When Harry arrives at the Ministry with Mr. Weasley, the book says that Harry is already 5 minutes late to his hearing. In the movie, Mr. Weasley says the hearing will start in 5 minutes and they manage to get there on time.
After they all get back to Hogwarts and get on the carriage, in the book, Ginny introduces Luna to everyone, prior to that, Hermione did not know her. In the movie, however, it is Hermione that introduces Luna to everyone.
When they decide to form the Dumbledore’s army, they are in need of a room for practice. So Harry makes it a job for everyone that until their next meeting, they have to come up with a suitable place. In the movie, Neville is the one that accidentally stumbles upon the Room of Requirements. In the book, none of this happens as it is Dobby who tells Harry about the room.
After many attempts, they are finally discovered by Umbridge. In the book, this happens because Cho’s friend leaks out the information. In the movie, Cho is the one who tells Umbridge under the influence of Veritaserum.
In the final stand-off they get confronted by the Death Eaters who want to get their hands on Harry’s prophecy. During the fight, Harry’s godfather, Sirius Black, gets killed by Bellatrix Lestrange, his cousin. In the book, he gets cursed by her and stumbles back into the veil. In the movie, he is hit by the death curse and is actually thrown into the veil.
When Harry goes chasing after Bellatrix, in the book, she gets trapped under a statue and Voldemort has to rescue her. In the movie, she does not get trapped and manages to use the Floo network to escape.
This is all! As always, I hope you enjoyed it! Remember to like it and share it!
See you on Friday!