lascar vs salty dog

lascar

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

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

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

salty dog

noun
  • An experienced sailor. 

  • A cocktail consisting of gin or vodka, grapefruit juice, and a salt rim. 

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