One mans “Dropoff” might be another mans “Step”…
To my mind a “Dropoff” or “Drop” specifically is not a rollable step and has no kick to it you litterally have to ride off of it both wheels no longer in contact with the ground, gravity and your inertia will do the rest…
A fair few people seem to consider steps which can be rolled over or popped off of to be a “Drop”, it’s not as there is no requirement for the rider to litterally Drop off of it no “Do or Die” factor… See?
Most of the rest is pretty self explanitary I reckon:
Doubles, Triples, tabletops, Berms, Kickers, wall rides, Rollers, Rhythm sections, Gaps, Rock gardens, etc are pretty much what they sound like….