redfish vs rockfish

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. 

rockfish

noun
  • A fish in the family Sebastidae, marine fishes that inhabit oceans around the world 

  • Acanthoclinus, a genus of fish from New Zealand 

  • A striped bass (Morone saxatilis), a species of fish from North America 

  • Certain groupers, in the subfamily Epinephelinae 

  • Salvelinus, a genus of fish in the salmon family 

  • A stonefishes (genus Synanceia), venomous fishes from the Indo-Pacific 

  • Certain fish of genus Scorpaena, such as Madeira rockfish (Scorpaena maderensis), a common Mediterranean species 

  • Myliobatis goodei (southern eagle ray) 

  • A logperch (Percina caprodes), also known as common logperch or log perch 

  • Hypoplectrodes, a genus of fish in the family Serranidae 

  • Sebastes, mainly of the North Pacific 

  • A long-spined bullhead (Taurulus bubalis) 

  • Hexagrammos, a genus of greenling from the North Pacific 

  • Scyliorhinus stellaris (nursehound), a shark known as rock salmon when used in cuisine 

  • A black person who does not know how to swim. 

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