butterfish vs jewfish

butterfish

noun
  • The sablefish (Anoplopoma fimbria) (the sablefish is not a true butterfish; but is called such informally) 

  • Perciform fish of the family Stromateidae, including the genera Pampus, Peprilus and Stromateus. 

  • A rock gunnel, Pholis gunnellus, an eel-like fish found in the intertidal and subtidal zones of the North Atlantic. 

  • The New Zealand fish Odax pullus, also known as greenbone. 

jewfish

noun
  • Tandanus tandanus (eel-tailed catfish, freshwater jewfish, dewfish) 

  • Argyrosomus regius (meagre) 

  • Lateolabrax japonicus (Japanese seabass) 

  • Epinephelus itajara (Atlantic goliath grouper, spotted jewfish) 

  • Argyrosomus japonicus (silver jewfish, also known as the mulloway jewfish in eastern Australia) 

  • Glaucosoma hebraicum (West Australian dhufish, Westralian jewfish, western jewfish) 

  • Johnius australis (bottlenose jewfish) 

  • Glaucosoma buergeri (Westralian jewfish) 

  • Stereolepis gigas (black jewfish, Pacific jewfish) 

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