jack mackerel vs lascar

jack mackerel

noun
  • Any of various edible fish, especially of genus Trachurus, but also genera Caranx, Acanthocybium and Euthynnus. 

lascar

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

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

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

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