Mezair; In the mezair, the horse rears up and strikes out with its forelegs. It is similar to a series of levades with a forward motion (not in place), with the horse gradually bringing its legs further under himself in each successive movement and lightly touching the ground with the front legs before pushing up again.
Courbette: As in the levade, the horse raises his forelegs and tucks them evenly towards his body. Support only by his back legs, he executes a series of forward hops. The strongest horses might succeed in completing five or more hops before touching the ground.
The Levade. One of the first dressage airs taught, this position is very strenuous. The horse gradually sinks down over his hindquarters while raising his front legs and tucking them under his body. The position is held for a few seconds before the forelegs are gently returned to the ground.
Courbette: the horse raises its forehand off the ground, tucks up forelegs evenly, and then jumps forward, never allowing the forelegs to touch down, in a series of "hops". Extremely strong and talented horses can perform five or more leaps forward before having to touch down with the forelegs...
Capriole; "leap of the goat", the horse jumps from a raised position of the forehand straight up into the air, kicks out with the hind legs, and lands more or less on all four legs at the same time. It requires an enormously powerful horse to perform correctly, and is considered the most difficult of all the airs above the ground.