dump truck vs gambado

dump truck

noun
  • A large pair of buttocks. 

  • A heavy truck, for carrying loose, bulk cargo, having a hinged bed that allows the contents to be unloaded onto the ground. 

gambado

noun
  • Either of a pair of protective leather gaiters on a saddle. 

  • gamashes; spatterdashes. 

  • A gambade (leaping movement). 

verb
  • To perform a gambade (leaping movement). 

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