caravan vs crocodile

caravan

noun
  • A convoy or procession of travelers, their vehicles and cargo, and any pack animals, especially camels crossing a desert. 

  • A furnished vehicle towed behind a car, etc., and used as a dwelling when stationary. 

verb
  • To travel in a caravan (procession). 

  • To travel and/or live in a caravan (vehicle). 

crocodile

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

  • 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. 

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

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