black cod vs pompano

black cod

noun
  • Synonym of sablefish (Anoplopoma fimbria); (the sablefish is not a species of codfish; but is referred to as cod informally) 

pompano

noun
  • An edible butterfish, Peprilus simillimus, the Pacific pompano. 

  • Any of various carangid fish, of the genus Trachinotus or species Alectis ciliaris, the African pompano, from coastal parts of the North Atlantic. 

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