crocodile vs progression

crocodile

noun
  • A fallacious dilemma, mythically supposed to have been first used by a crocodile. 

  • Any of the predatory amphibious reptiles of the family Crocodylidae; (loosely) a crocodilian, any species of the order Crocodilia, which also includes the alligators, caimans and gavials. 

  • A long line or procession of people (especially children) walking together. 

verb
  • To speak one's native language at an Esperanto-language gathering, rather than Esperanto. 

progression

noun
  • A sequence obtained by adding or multiplying each term by a constant. 

  • chord progression 

  • The act of moving from one thing to another. 

  • The act of moving forward or proceeding in a course; motion onward. 

  • Development, increase, evolution. 

  • The making an exercise more exerting by manipulating the details of its performance like loaded weight, range of motion, angle, speed. 

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