capability vs feebleness

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. 

feebleness

noun
  • The quality or state of being feeble; debility; infirmity. 

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