possession vs tenure

possession

noun
  • The condition or affliction of being possessed by a demon or other supernatural entity. 

  • Control of the ball; the opportunity to be on the offensive. 

  • A disposal of the ball during a game, i.e. a kick or a handball. 

  • Something that is owned. 

  • Control or occupancy of something for which one does not necessarily have private property rights. 

  • Ownership; taking, holding, keeping something as one's own. 

  • A territory under the rule of another country. 

  • The condition of being under the control of strong emotion or madness. 

  • A syntactic relationship between two nouns or nominals that may be used to indicate ownership. 

tenure

noun
  • A period of time during which something is possessed. 

  • A status of possessing a thing or an office; an incumbency. 

  • A right to hold land under the feudal system. 

  • A status of having a permanent post with enhanced job security within an academic institution. 

verb
  • To grant tenure, the status of having a permanent academic position, to (someone). 

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