spigot vs water pipe

spigot

noun
  • A water tap: a faucet or sillcock. 

  • The plug of a faucet, tap or cock. 

  • A pin or peg used to stop the vent in a cask. 

verb
  • To block with a spigot. 

  • To insert (a spigot). 

water pipe

noun
  • A pipe that is a conduit for water; an essential element of plumbing. 

  • A device for smoking, such as a hookah or bong, in which the smoke is drawn through a container of water before inhaling. 

How often have the words spigot and water pipe occurred in a corpus of books? (source: Google Ngram Viewer )