carafe vs watch glass

carafe

noun
  • A bottle, usually glass and with a flared lip, used for serving water, wine, or other beverages. 

  • A glass pot with a spout for pouring, used for both serving coffee and as a receptacle during the brewing process. 

watch glass

noun
  • An item of glass laboratory equipment consisting of a simple, slightly concave circle of glass. It is a general utility item, used to hold small samples, to evaporate liquids, to cover a beaker, and so on. 

  • A sandglass. 

  • The glass covering of the face of a watch. 

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