Alohomora

~ Unlocking charm

Locomotor Mortis

~ Leg-locker curse

Petrificus Totalus

~ Full body-bind

Wingardium Leviosa

~ To make an object fly

Aparecium

~ To reveal invisible objects

Expelliarmus

~ To remove an object from someone

Finite Incantatem

~ To end a charm

Lumos

~ To light a wand

Obliviate

~ Memory charm

Rictusempra

~ Tickling charm

Serpensortia

~ To summon a snake

Tarantallegra

~ Dancing charm

Dissendium

~ Opens the passage in the one-eyed witch's hump

Expecto Patronum

~ Creates an anti-Dementor Patronus

Ferula

~ Bandaging spell

Impervius

~ Water-repelling charm

Mobiliarbus

~ Used to move a tree

Mobilicorpus

~ Used to move a person/body

Nox

~ Extinguishes a lit wand

Riddikulus

~ Anti-boggart spell

Waddiwasi

~ Unjamming spell

Accio

~ Brings an object to you

Incendio

~ To light a fire

Sonorous

~ To amplify your voice

Quietus

~ To end Sonorous

Morsmordre

~ To conjure the dark mark

Stupefy

~ To stun

Enervate

~ To wake up from being stunned

Prior Incantatem

~ To repeat the wand's previous spell

Deletrius

~ To destroy an image such as the dark mark

Reparo

~ To repair something

Ingorgio

~ To make something grow

Reducio

~ To make something shrink

Fernunculus

~ Boils

Densaugeo

~ Causes your front teeth to grow massively

Orchideous

~ To produce flowers from the end of a wand

Avis

~ To produce birds

Diffindo

~ To split something open

Relashio

~ To release something

Point Me

~ Causes your wand to point north

Reducto / Reductor Curse

~ To blast a path through solid objects

Impedimenta / Impediment jinx

~ To stop something moving

Conjunctivitus curse

~ Something to do with the eyes. Useful against dragons.

Shield Charm

Caster is surrounded by a temporary, invisible wall that deflects minor curses.

Imperio

~ To have total control over something

Crucio

~ To cause torture and pain

Avada Kedavra

~ To kill