preclude vs shut out

preclude

verb
  • Remove the possibility of; rule out; prevent or exclude; to make impossible. 

shut out

verb
  • To prevent from entering; to block or exclude. 

  • To prevent from scoring; to perform a shutout. 

  • To hide from sight. 

  • To refuse to be open and vulnerable toward. 

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