conserve vs splurge

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. 

splurge

verb
  • To (cause to) gush; to flow or move in a rush. 

  • To spend lavishly or extravagantly, especially money. 

  • To produce an extravagant or ostentatious display. 

noun
  • An extravagant indulgence; a spending spree. 

  • An extravagant or ostentatious display. 

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