WILD - when your mind stays awake yet your body goes asleep. This in turn leads to a forced exp. of SP, or sleep paralasys

Sleep Paralasys - when you cannot move your body yet you are awake. This is usually accompanied by Illusions that are not really there

DILD - When you are dreaming, and realize you are dreaming by luck or by a reality check

An RC is a reality check - checking to see if you are dreaming or not. Things like pinching your nose and trying to breathe through, or looking at the time twice to see if it changed.

Hope that helps!
Bryan