Check this out:
from the "article" on Newschool skiing:http://en.wikipedia.org/wiki/Newschool_skiing
Rails, walls, and boxes that can be ground.
A jump in which the landing is lower than the launch ramp.
A jump in which the landing is higher than the airtime.
A jump that looks somewhat like a triangle or trapezoid in which you take off of a flat part, clear a lip in the air, and then land on a helicopter.
A jump that has a large gap in between the take off and rail. One of the most famous urban rails in newschool skiing is the El Toro
A jump in which the airtime is on the side of the take off.
A jump, similar to a Hip Jump, in which the 7 is on either side of the horse bump.