disc faucet
Type of faucet fitted with two perforated discs that regulate the water’s flow and its temperature.
aerator 
Device fitted with a screen and attached to the spout; it aerates the water and prevents splashing.
cylinder 
Part fitted with two discs: one activated by the handle, the other stationary.
bonnet 
Decorative part covering the body of the faucet; the handle turns on it.
handle 
Lever for controlling water flow and the mixture of hot and cold water.