Snowboard terms, defined.

Riding with your non-dominant foot leading instead of your natural stance. If you normally ride left-foot-forward (regular), switch means riding right-foot-forward - and vice versa. It feels foreign at first but is essential for landing tricks and all-round board control.

Your natural stance on the board. Regular means riding with your left foot forward, goofy means riding with your right foot forward. Neither is better - it's simply which way feels natural, like being left- or right-handed.

The two edges of your snowboard. The heelside edge runs under your heels, the toeside edge under your toes. Almost everything on a snowboard - stopping, turning, carving - comes down to controlling which edge is in the snow and how much pressure you put on it.

The direction of a rotation or approach where your chest opens toward the direction of travel (or the obstacle) first - usually abbreviated FS, as in FS 180. For a regular rider a frontside 180 rotates counter-clockwise. The term comes from surfing and skateboarding and sticks to every spin and rail trick.

The opposite direction to frontside - your back leads into the rotation or the obstacle, abbreviated BS, as in BS 360. Backside is usually the slower of the two to trust, because you lose sight of the landing or the end of the feature partway through the rotation.

The rounded crest of a jump landing - the hill right after the kicker, where the flat deck rolls over into the downslope. Coming up short and landing on the knuckle feels like hitting flat ground, so you aim to clear it and touch down on the slope past it. Riders also session knuckles on purpose: bouncing tricks off them ("knuckle hucks") is a lower-consequence way to play with pop and rotations.