prize money vs spoils

prize money

noun
  • Money offered as a prize in a competitive event. 

spoils

noun
  • That which is taken from another by violence; especially, the plunder taken from an enemy; pillage; booty. 

  • Waste material left over in the course of excavation, construction, mining, or dredging operations. 

  • Public offices and their benefits regarded as the peculiar property of a successful party or faction, to be bestowed for its own advantage. 

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