enervate vs weaken

enervate

verb
  • To weaken morally or mentally. 

  • To partially or completely remove a nerve. 

  • To reduce strength or energy; debilitate. 

adj
  • Made feeble; weakened. 

weaken

verb
  • To become weaker or less strong. 

  • To make weaker or less strong. 

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