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Anti-Disapparition Jinx
Prevents the subject from disapparating, which will also prevent him or her from apparating, as one must disapparate in order to apparate.

Avada Kedavra
uh-VOH-duh ked-AHV-ruh
Killing Curse
Kills the subject instantly, with a flash of green light.
NOTE: Not recommended, as it is Unforgivible and will most likely land you in Azkaban if you are not using it for selfe-defense.