experiment vs prove out

experiment

verb
  • To conduct an experiment. 

noun
  • A test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy or likelihood of something previously untried. 

prove out

verb
  • To demonstrate the feasibility of; to show or be shown to be feasible, accurate, true, satisfactory, as expected, hoped, stated, etc. 

  • To turn out to be feasible, accurate, true, satisfactory, as expected, hoped, stated, etc. 

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