conserve vs consume

conserve

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. 

noun
  • Wilderness where human development is prohibited. 

  • A jam or thick syrup made from fruit. 

consume

verb
  • To use up. 

  • To trade money for good or services as an individual. 

  • To completely occupy the thoughts or attention of. 

  • To eat. 

  • To destroy completely. 

  • To absorb information, especially through the mass media. 

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