belief vs entity

belief

noun
  • The quality or state of believing. 

  • Mental acceptance of a claim as true. 

  • Religious faith. 

  • One's religious or moral convictions. 

  • Faith or trust in the reality of something; often based upon one's own reasoning, trust in a claim, desire of actuality, and/or evidence considered. 

  • Something believed. 

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. 

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