ouster vs permission

ouster

noun
  • A putting out of possession; dispossession; ejection. 

  • Action by a cotenant that prevents another cotenant from enjoying the use of jointly owned property. 

  • Someone who ousts. 

  • Specifically, the forceful removal of a politician or regime from power; coup. 

verb
  • To oust. 

permission

noun
  • The act of permitting. 

  • authorisation; consent (especially formal consent from someone in authority) 

  • Flags or access control lists pertaining to a file that dictate who can access it, and how. 

verb
  • To grant or obtain authorization for. 

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