sailboat vs swabber

sailboat

noun
  • A playing card with the rank of four. 

  • A boat propelled by a sail. 

swabber

noun
  • Four privileged cards, formerly used in betting in whist. 

  • An instrument for swabbing. 

  • A baker's implement for cleaning ovens. 

  • An interior officer on British warships, responsible for seeing that the ship was kept clean. 

  • One who swabs a floor or deck. 

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