conserve vs squirrel away

conserve

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

  • To protect an environment, heritage, etc. 

  • To remain unchanged during a process 

noun
  • Wilderness where human development is prohibited. 

  • A jam or thick syrup made from fruit. 

squirrel away

verb
  • To stash or hide; to hoard, collect, save, or accumulate; to create a reserve, stash, or hoard of some supply. 

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