Protection includes camming devices, friends, bolts and pitons. Prusik -a technique for climbing rope. Prusik knots were invented by Karl Prusik many years ago and can slide freely when unweighted but won't slip when weight is applied to it. The term is now used to describe rope climbing with jumar ascenders. The chosen combination of gear, including chocks and carabiners, usually carried by the leader and hung from a sling over his or her shoulder.
Racks look like mega-size charm bracelets or a carpenter's belt run amok.
Rad - short for radical. An extreme compliment in the climbing world. To descend a rope using mechanical brake devices. Rappelling is one way to descend after topping out on a route. Scree - Small, loose pebbles that dot certain landscapes and make hiking up to a route pure hell.