1.The Four Houses of Hogwarts: In Hogwarts School of Witchcraft and Wizardry, an object called the Sorting Hat sorted the 1st year students into four houses. The boldest were sent to Gryffindor, the cleverest to Ravenclaw, the nicest to Hufflepuff, and the most power-hungry were sorted to Slytherin. Harry Potter and his friends Hermione and Ron were in the Gryffindor House. Harry's worse rival student, Draco Malfoy, was in the Slytherin House.
2. The Triwizard Tournament: A traditional tournament between the three greatest witchcraft and wizardry schools in Europe; Hogwarts (England), Beauxbatons (France) and Durmstrang (Bulgaria). The Goblet of Fire selected a champion to represent each school, and the three champions competed in three magical tasks. The champion who wins the Triwizard cup gets a thousand Galleons (golden coins) personal prize money and the glory for his school. In the book, the Goblet of Fire shot two parchments with names of Hogwarts students.
One was Cedric Diggory from Hufflepuff, and the second was Harry Potter from Gryffindor. At the end of the third task, Harry Potter and Cedric Diggory found the Triwizard Cup together, but the Triwizard cup was a trap. When they touched it, they were dispatched to a place where they encountered the evil wizard, Voldemort. Voldemort killed Cedric Diggory, and fought Harry. Harry succeeds to run back to the school without being killed by Voldemort.
3.The Goblet of Fire: A magical goblet with flames inside. In the book, Dumbledore (Headmaster of Hogwarts School of Witchcraft and Wizardry) uses this object to choose one champion from each witchcraft and wizardry school. The flames inside the goblet propelled a piece of parchment with the names of the best students suited to be champions. Barty Crouch put a spell on the Goblet of Fire so that...