lascar vs swabber

lascar

noun
  • A tent-pitcher; also a type of artilleryman. 

  • Any of various nymphalid butterflies of the Asian genera Pantoporia and Lasippa. 

  • A sailor from India or Southeast Asia, especially as serving on a European ship. 

swabber

noun
  • 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. 

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

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