bibcock vs faucet

bibcock

noun
  • An appliance (typically a valve with a threaded outlet) allowing the provision of hose connections outside of buildings. 

faucet

noun
  • An exposed plumbing fitting; a tap or spigot; a regulator for controlling the flow of a liquid from a reservoir. 

  • One or several systems that inject currency into the game's economy, thus controlling or preventing inflation 

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