crawfish vs recede

crawfish

verb
  • To backpedal, desert or withdraw (also used with out). 

noun
  • Various marine crustaceans, rock lobster; especially Jasus lalandii, the Cape crawfish. 

  • Various freshwater crustaceans, crayfish. 

  • A slur against Anglo-Canadians used in some corners of Quebec (including the Gaspé). 

recede

verb
  • To move back; to retreat; to withdraw. 

  • To cede back; to grant or yield again to a former possessor. 

  • To take back. 

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