outrun vs plow under

outrun

verb
  • To run faster than. 

  • To exceed or overextend. 

noun
  • In ski jumping, the flat or uphill area past the landing point, where the skier can slow down. 

  • The sheepdog's initial run towards the sheep, done in a curving motion so as not to startle them. 

plow under

verb
  • To destory (crops) by turning them into the ground with a plow 

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