Airbending: This type of bending allows the user to control the movement of air, and can be used to create powerful gusts of wind, air shields, and even fly.
Waterbending: This type of bending allows the user to control the movement of water, and can be used to create waves, water whips, and even ice.
Earthbending: This type of bending allows the user to control the movement of earth, and can be used to create rock shields, earthen spikes, and even earthquakes.
Firebending: This type of bending allows the user to control the movement of fire, and can be used to create fireballs, fire whips, and even fire walls.
In addition to these four main types of bending, there are also several sub-types of bending, such as:
Metalbending: This is a sub-type of earthbending that allows the user to control the movement of metal.
Lavabending: This is a sub-type of earthbending that allows the user to control the movement of lava.
Bloodbending: This is a sub-type of waterbending that allows the user to control the movement of blood.
Energybending: This is a rare and powerful type of bending that allows the user to control the movement of spiritual energy.
The Avatar is the only person who is able to master all four elements, and is therefore considered the most powerful bender in the world.