If a hitbox is a cube, than what do they call a hitsphere or a hitcylinder?

Another week of learning Godot, and another week of nodes making TOTAL sense...

There doesn't seem to be quite the ability to use number coordinates to line stuff up. Will there be a double jump option? Will there be a level 2? Is there any stinking reason the quit button even exists? How does Godot include audio? Will I find out soon?