capability vs weakness

capability

noun
  • the power or ability to generate an outcome 

  • A digital token allowing a user or process to interact in a specified way with an object that is subject to access control. 

weakness

noun
  • An inadequate quality; fault 

  • The condition of being weak. 

  • A special fondness or desire. 

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