reality vs subsistence

reality

noun
  • The state of being actual or real; realness. 

  • The entirety of all that is real. 

  • The real world. 

  • An individual observer's own subjective perception of that which is real. 

  • A real entity, event, or other fact. 

subsistence

noun
  • Real being; existence. 

  • Embodiment or personification or hypostasis of an underlying principle or quality. 

  • Inherency. 

  • Something (food, water, money, etc.) that is required to stay alive. 

  • The act of maintaining oneself at a minimum level. 

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