bring on vs make happen

bring on

verb
  • To cause. 

  • To pose a challenge or threat; to attack; to compete aggressively. 

  • To make something appear, as on a stage or a place of competition. 

make happen

verb
  • To realize, to bring about a thing. 

How often have the words bring on and make happen occurred in a corpus of books? (source: Google Ngram Viewer )