ability vs permissibility

ability

noun
  • The legal wherewithal to act. 

  • A unique power of the mind; a faculty. 

  • A skill or competence in doing; mental power; talent; aptitude. 

  • The quality or state of being able; capacity to do or of doing something; having the necessary power. 

  • Physical power. 

permissibility

noun
  • A permissible act. 

  • The condition of being permissible; legitimacy; allowability. 

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