crayfish vs shrimp

crayfish

noun
  • A rock lobster (family Palinuridae). 

  • Any of numerous freshwater decapod crustaceans in superfamily Astacoidea or Parastacoidea, resembling the related lobster but usually much smaller. 

  • The species Thenus orientalis of the slipper lobster family (Scyllaridae). 

  • A freshwater crustacean (family Cambaridae), sometimes used as an inexpensive seafood or as fish bait. 

  • A freshwater crayfish (family Parastacidae), such as the gilgie, marron, or yabby. 

verb
  • to catch crayfish 

shrimp

noun
  • The flesh of such crustaceans. 

  • Any of many swimming, often edible, crustaceans, chiefly of the infraorder Caridea or the suborder Dendrobranchiata, with slender legs, long whiskers and a long abdomen. 

  • A small, puny or unimportant person. 

  • Synonym of butterface: a person with an attractive body but unattractive face. 

verb
  • To fish for shrimp. 

  • To contract; to shrink. 

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