capability vs enervation

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. 

enervation

noun
  • State of being enervated; debility. 

  • Act of enervating; debilitation. 

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