What is trial unicycling?

Where I live the closes place that might unicycle is pittsburg. I want to know what is trial unicycling is. What is the differance between that and free style?
What are these tricks:?
unispins
hop-twists
Backward pirouette(or forwards if possible)
side-ways wheel walks
a 1foot (or something like that)

What does it mean spin to the left or right?

Thanks

Freestylers are ballerinas. But they rarely leave the ground. Wheelwalking, spinning, one-footing … performing. …artists.

Trials is hopping up onto and off of stuff. Or across gaps. Trials is kind of like urban MUni. You should wear your RoboCop gear (but most don’t)

The better Trials riders are clinically insane. :wink: