What is the diff. b/w Herding and bulldozing?

we don’t what the difference between bulldozing and herding is.
we don’t even know if bulldozing is allowed, is it?
well we would really appreciate it if you could help us!:smiley:

Herding is controlling the motion of a ball on the ground. Bulldozing is bumping into a ball, causing it to wander wherever. Bulldozing is explicitly allowed.