codfish vs whiting

codfish

noun
  • A cod (the fish). 

  • The flesh of the cod as food. 

whiting

noun
  • A fish, Merlangius merlangus (family Gadidae), similar to cod, found in the North Atlantic; English whiting (US). 

  • A fine white chalk used in paints, putty, whitewash etc. 

  • Any of several marine fish found in North American coastal waters, including hakes (genus Merluccius), especially Merluccius bilinearis (the silver hake). 

  • Alaska pollock (Gadus chalcogrammus, syn. Theragra chalcogramma). 

  • A southern blue whiting (Micromesistius australis), a marine fish of the Southern Hemisphere. 

  • in family Sciaenidae, Menticirrhus americanus (Carolina whiting, king whiting, southern kingcroaker, and southern kingfish) found along the Atlantic and Gulf Coasts of the United States. 

  • in family Sillaginidae, smelt-whitings, inhabiting Indo-Pacific marine coasts, many species of which are commercially important whitefish. 

  • A blue whiting (Micromesistius poutassou), a marine fish of the Northern Hemisphere. 

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