A sled specially designed and built for racing. It rides on runners called steels, attached to two kufens, which are connected by the bridges. The slider rides in a pod that's suspended from the bridges. (French for "sled.")
A luge is small one- or two-person sled on which one sleighs supine and feet-first. Steering is done by flexing the sled's runners or pulling straps attached to the sled's runners. Luge is also the name of the sport which involves racing with such sleds.