prove vs shoot down

prove

verb
  • To ascertain or establish the genuineness or validity of; to verify. 

  • To demonstrate that something is true or viable; to give proof for. 

  • To put to the test, to make trial of. 

  • To determine by experiment which effects a substance causes when ingested. 

  • simple past tense of proove 

  • To turn out; to manifest. 

  • To turn out to be. 

noun
  • The process of dough proofing. 

shoot down

verb
  • To criticize a (request) to the point of preclusion. 

  • To cause to fall by shooting. 

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