get on vs prove out

get on

verb
  • To progress (with). 

  • To handle, cope or manage (over time); to perform or make progress. 

  • To board or mount (something), especially a vehicle. 

  • To become late. 

  • To have a good relationship; to get along. 

  • To commence (an action). 

  • To become old. 

intj
  • Expresses surprise or disbelief. 

prove out

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

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

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