dory vs jack salmon

dory

noun
  • Any of several different families of large-eyed, silvery, deep-bodied, laterally compressed, and roughly discoid marine fish. 

  • A small flat-bottomed boat with pointed or somewhat pointed ends, used for fishing both offshore and on rivers. 

  • A wooden pike or spear about three metres (ten feet) in length with a flat, leaf-shaped iron spearhead and a bronze butt-spike (called a sauroter), which was the main weapon of hoplites in Ancient Greece. It was usually not thrown but rather thrust at opponents with one hand. 

jack salmon

noun
  • A Chinook salmon that returns to the fresh water one or two years early. 

  • Sander vitreus. 

  • Sander canadensis. 

  • Merluccius productus, a ray-finned fish found in the northeast Pacific Ocean. 

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