encourage vs enervate

encourage

verb
  • To mentally support; to motivate, give courage, hope or spirit. 

  • To spur on, strongly recommend. 

  • To foster, give help or patronage 

enervate

verb
  • To weaken morally or mentally. 

  • To partially or completely remove a nerve. 

  • To reduce strength or energy; debilitate. 

adj
  • Made feeble; weakened. 

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