jack mackerel vs trevally

jack mackerel

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

trevally

noun
  • Any of certain fishes of the family Carangidae. 

  • Any such species sold for food. 

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