confine vs corral

confine

verb
  • To restrict (someone or something) to a particular scope or area; to keep in or within certain bounds. 

noun
  • Confinement, imprisonment. 

  • A boundary or limit. 

corral

verb
  • To place inside of a corral. 

  • To make a circle of vehicles, as of wagons so as to form a corral. 

  • To capture or round up. 

noun
  • An enclosure for livestock, especially a circular one. 

  • A circle of wagons, either for the purpose of trapping livestock, or for defense. 

  • An enclosure or area to concentrate a dispersed group. 

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