bowser vs tippler

bowser

noun
  • A buffoon or imbecile. 

  • A road vehicle (often a trailer) for the transport of liquid fuel, particularly aviation fuel at an airfield. 

  • A fuel metering/delivery pump at a filling station. 

  • A mobile water tank deployed to distribute fresh water in emergency situations where the normal system of piped distribution has broken down or is insufficient. 

tippler

noun
  • A habitual drinker; a bibber. 

  • A breed of domestic pigeon bred to participate in endurance competitions. 

  • An open wagon with a tipping trough, unloaded by being inverted (used for bulk cargo, especially minerals). A mine car, a lorry. 

  • One who works at a tipple. 

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