Windlass

Capstan
Often referred to as a drum, rope drum, or warping drum. The capstan is primarily used for hauling rope.
Free Fall
Release of the winch clutch mechanism allowing the anchor and rode (chain or rope and chain) to run out freely with no engagement of winch gearbox or motor.     
Gypsy
Often referred to as chainwheel or wildcat. A special wheel with pockets, to accommodate a specified chain size, for hauling up the chain and anchor. With automatic rope/chain systems the gypsy is designed to haul both rope and chain.  
Horizontal
Pertaining to the winch or windlass. Drive shaft, capstan and gypsy are positioned horizontally to the deck. 
Vertical
Pertaining to the winch or windlass. The drive shaft, capstan and gypsy are positioned vertically to the deck.    
Winch
A windlass driven by a hand or power-operated crank or gearbox. Often implies to pull or lift a weight by using a winch.
Windlass
A machine for raising a weight by winding a rope and/or chain around a drum or chainwheel, driven by a crank, motor, etc.  
Working load
Often referred to as the normal working load or the typical lift of the winch. This is usually somewhere between 25% to 35% of the maximum pull or rated lift. This workload should approximately correspond to the total weight of the anchor and rode aboard the boat.