A wick is a piece of braided cotton cord that runs through the center of a candle. Wicks work by drawing melted candle wax up from the candle, and the melted wax burns in the wick. You have to light the wick with a match to start the process.
A winch is a device used for tightening a rope. They can be hand powered or powered by a motor. Winches can be used on a crane to lift things, to tow boats out of the water like the winch in the picture, or to tighten the rigging on a sailboat.
