cod vs redfish

cod

noun
  • The meat of any of the above fish 

  • The Atlantic cod, Gadus morhua. 

  • The cocoon of a silkworm. 

  • Other not closely related fish which are similarly important to regional fisheries, as the hapuku and cultus cod. 

  • The sea fish of the family Gadidae which are sold as "cod", as haddock (Melanogrammus aeglefinus) and whiting (usually Merlangius merlangus). 

  • A joke or an imitation. 

  • Other not closely related fish which resemble the Atlantic cod, as the rock cod (Lotella rhacina) and blue cod (Parapercis colias). 

  • A stupid or foolish person. 

  • The sea fish of the genus Gadus generally, as inclusive of the Pacific cod (Gadus macrocephalus) and Greenland cod (Gadus ogac or Gadus macrocephalus ogac). 

verb
  • To attempt to deceive or confuse; To joke; To kid. 

adj
  • Bad. 

  • Having the character of imitation; jocular. 

redfish

noun
  • Sebastes spp., the edible red rockfish. 

  • Etelis oculatus, queen snapper. 

  • Rhomboplites aurorubens, vermillion snapper. 

  • A slimehead, of family Trachichthyidae. 

  • A large red edible fish, Sciaenops ocellatus, also called channel bass or red drum. 

  • especially Sebastes norvegicus, found in North American waters, also called rosefish or ocean perch. 

  • Lutjanus spp., snappers. 

  • Centroberyx affinis, eastern nannygai. 

  • Oncorhynchus nerka, sockeye salmon. 

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