Obviously, falling down on the landing is the worst ending for a jump with the greatest amount of deductions. You may wonder why some jump names are capitalized while others are not. The toe loop, flip, and loop are named after their technique and are not capitalized. So a rule was formed that basically says the skater can only perform each jump as a triple once, and if they want to repeat it, it must be done in combination. A pairs throw is an assisted jump for the lady.
Jumps are illegal in ice dancing.
By turning on the ice, they've changed edges, and so do not get full credit for a combination. The Axel is the easiest jump for the skating fan to recognize, because it is the only jump with a forward take-off. Well, you may have noticed that skaters spend much of their time gliding backwards into jumps, and they land gliding backwards. But with the Axel, the skater must step nearly 180 degrees around to face a forward line of direction to launch themselves into the jump. This extra half rotation is what makes the triple Axel so difficult and exciting to watch.