tube vs vas

tube

noun
  • An approximately cylindrical container, usually with a crimped end and a screw top, used to contain and dispense semiliquid substances. 

  • Anything that is hollow and cylindrical in shape. 

  • The London Underground railway system, originally referred to the lower level lines that ran in tubular tunnels as opposed to the higher ones which ran in rectangular section tunnels. (Often the tube.) 

  • A television. Compare cathode ray tube and picture tube. 

  • A tin can containing beer. 

  • An idiot. 

  • A wave which pitches forward when breaking, creating a hollow space inside. 

verb
  • To supply with, or enclose in, a tube. 

  • To intubate. 

  • To ride an inner tube. 

vas

noun
  • A vessel or duct transporting any bodily fluid, such as blood, lymph, chyle, or semen. 

  • The vas deferens. 

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