backing vs smart money

backing

noun
  • Support, especially financial. 

  • A backdrop. 

  • The mounting of a horse or other animal. 

  • The action of putting something back; a switching into reverse. 

  • A liner or other material added behind or underneath. 

  • Musicians and vocalists who support the main performer. 

adj
  • Providing support for the main performer. 

smart money

noun
  • The money invested or bet by such people; by extension, the opinions of such people. 

  • Money allowed to soldiers or sailors, in the English service, for wounds and injuries received; also, a sum paid by a recruit, previous to being sworn in, to procure his release from service. 

  • Money paid by a person to buy himself off from some unpleasant engagement or some painful situation. 

  • Experienced, well-informed investors, gamblers, etc. considered as a group. 

  • Vindictive or exemplary damages; damages beyond a full compensation for the actual injury done. 

How often have the words backing and smart money occurred in a corpus of books? (source: Google Ngram Viewer )