Riddikulus is a Boggart-banishing spell. The person must think of something funning while casting this spell. The spell, if successful, will transform Boggart into what the person was thinking about.
This spell was a curse invented by Professor Severus Snape. This spell was used to lacerate the target and causes severe haemorrhaging.
In Harry Potter world, the term Obliviate means 'forget'. It is a memory charm and will result in the erasure of memory.
Avada Kedavra the killing curse and was a tool of the Dark Arts. It was one of the three Unforgivable Curses. The curse caused instantaneous and painless death when cast successfully on a living person or creature.
Alohomora is the unlocking charm. It was used to unlock objects such as doors or windows.
Lumos is the wand-lighting charm. How we (muggles) use our phone's torch, Harry and his friends used Lumos charm to light up their wands.
Expelliarmus is the Disarming Charm, used to drive out a weapon from the opponent.
Wingardium Leviosa charm was used to make objects fly. We remember when Hermione said, 'It's Leviosa, Not Leviosaaa!'
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Expecto Patronum was one of the most famous charms in the Harry Potter world. It was one of the most powerful defensive charms known to Wizardkind. It channels caster's positive emotions into a powerful protection to cause positive energy force known as a Patronus.
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