The world of Harry Potter is full of complicated magic systems, vast family trees, and countless magical creatures. It's these features that make the world so enchanting for fans. Harry would not have made it very far in his adventures if it weren't for his knowledge of spells (or, most likely, Hermione's knowledge).
The spells used in the movies come straight from the books themselves. However, they are many spells the Golden Trio used in the books that did not make it into the movies.
Movie Spells
Accio
A charm used to summon objects. This charm is used many times throughout the books and films. For example, Harry uses it to summon his broom during the first task of the Triwizard Tournament.
Age Line
This is a charm is used to create a barrier that can only be crossed when someone meets an age requirement. This charm is also used in Harry Potter and the Goblet Fire to keep underage students from putting their names in the Goblet of Fire. Fred and George attempt to cross it but are immediately thrown out.
Aguamenti
A charm used to produce water from the tip of the 's wand. Harry used this spell to give water to Dumbledore after he drank the potion concealing the locket Horcrux.
Alarte Ascendare
Launches the target object or person into the air. Lockhart uses this when attempting to get rid of a snake created during second year dueling club.
Alohomora
A charm used to unlock locks. Hermione uses this to unlock the forbidden corridor in Harry Potter and the Sorcerer's Stone.
Apparition
This spell allows wizards to teleport from one place to another. Similar to driving in the muggle world, wizards must a test to legally Apparate. If not done correcting, the caster may be splinched, meaning some part of their body did not apparate with the rest. This happened to Ron, although to a lesser degree, when escaping Death Eaters at the Ministry.
Arania Exumai
A charm used to get rid of spiders. Harry and Ron use it on Acromantulas in the Forbidden Forest during their second year.
Arresto Momentum
Used to slow the momentum of the moving target. Dumbledore used this charm in Harry Potter and the Prisoner of Azkaban after a Dementor caused Harry to fall from his broom during a Quidditch match.
Ascendio
Launches the caster into the air. Harry used this in the second task of the Triwizard Tournament to leave the lake as his gillyweed lost effect.
