Harry Potter: Apparate - Disapparate : Apparition - Disapparation
Apparition is a magical method of transportation and is basically the magical action of traveling by having the user focus on a desired location in their mind, then disappear from their current location and instantly reappear at the desired location. It is by far the fastest way to get to one's desired destination, but is tricky to pull off correctly and disastrous if botched up.
Clips from:
Harry Potter and The Goblet of Fire
Harry Potter and The Order of the Phoenix
Harry Potter and The Half-Blood Prince
Harry Potter and The Deathly Hallows Part 1
Harry Potter and The Deathly Hallows Part 2
clips credited to Warner Brothers Inc.