There is no special name for a celebration in Harry Potter.
The first Harry Potter is called Harry Potter and the Philosophers Stone but was published in the USA as Harry Potter and the Sorcerers Stone. I do not believe J.K Rowling ever considered another name for it.
harry!
There is no scientific name for Harry Potter.
That is the name of the book and the movie. There is no alternative name for it.
The third Harry Potter movie is called Harry Potter and the Prisoner of Azkaban.
Yes, Harry's full name is Harry James Potter.
Harry James Potter.
Harry James Potter
There is no character of that name in Harry Potter.
Harry James Potter
The name of the court in Harry Potter is the Wizengamot
Harry Potter and the Deathly Hallows.