entity vs subsistence

entity

noun
  • The state or quality of being or existence. 

  • That which has a distinct existence as an individual unit. Often used for organisations which have no physical form. 

  • Anything about which information or data can be stored in a database; in particular, an organised array or set of individual elements or parts. 

  • An alien lifeform that has no corporeal body. 

  • A spirit, ghost, or the like. 

  • The existence of something considered apart from its properties. 

subsistence

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

  • Real being; existence. 

  • 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 entity and subsistence occurred in a corpus of books? (source: Google Ngram Viewer )