crayfish vs yabby

crayfish

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

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

  • A rock lobster (family Palinuridae). 

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

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

verb
  • to catch crayfish 

yabby

noun
  • A species of marine ghost shrimp, Trypaea australiensis, widely harvested by recreational anglers as bait. 

  • An Australian freshwater crayfish of the genus Cherax, especially Cherax destructor. 

verb
  • To show disrespect by denouncing or insulting; to diss. 

  • To search, forage, or fish for yabbies. 

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