Here are some of the terms used in rowing & canoeing:
Bell boat is a sturdy, double-hulled boat ideal for beginners.
Dragon boating is a special kind of paddling - see Other Sports.
Gig is an older-style boat also ideal for beginners.
Head is a time race with a staggered start.
Repechage is a second chance given in international racing to crews failing to qualify for finals in an opening heat.
Sculling means each rower has two oars, one in each hand. Competition sculling may have single, double or quadruple rowers.
Shell means the boat.
Sweep rowing means each rower uses both hands for one oar. Competitive sweep rowing has crews of two, four or eight.
... is that in rowing the oars are connected to the boat and in canoeing the paddles are hand-held and have no mechanical connection.