dogfish vs spurdog

dogfish

noun

  • a kitefin shark, any shark from family Dalatiidae 

  • Ginglymostoma cirratum 

  • especially those from the family Squalidae 

  • a catshark, any shark from family Scyliorhinidae 

  • Scyliorhinus canicula or Scyliorhinus stellaris 

  • Squalus suckleyi 

  • Ginglymostoma cirratum or Mustelus canis 

  • Squalus acanthias, Squalus blainville, Squalus megalops, or Squalus mitsukurii 

  • Mustelus canis 

  • The bowfin, Amia calva. 

  • Scyliorhinus canicula 

  • Bodianus rufus 

spurdog

noun

  • A dogfish shark of the genus Squalus. 

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