conserve vs disburse

conserve

noun
  • Wilderness where human development is prohibited. 

  • A jam or thick syrup made from fruit. 

verb
  • To protect an environment, heritage, etc. 

  • To remain unchanged during a process 

  • To save for later use, sometimes by the use of a preservative. 

disburse

verb
  • To pay out, expend; usually from a public fund or treasury. 

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