wear out vs work too hard

wear out

verb
  • To punish by spanking. 

  • Of apparel, to display in public. 

  • To deteriorate or become unusable or ineffective due to continued use, exposure, or strain. 

  • To become exhausted, tired, fatigued, or weary, as by continued strain or exertion. 

  • To cause (something) to become damaged, useless, or ineffective through continued use, especially hard, heavy, or careless use. 

  • Of a shirt, to not tuck into the pants; to wear in a casual manner. 

  • To exhaust; to cause or contribute to another's exhaustion, fatigue, or weariness, as by continued strain or exertion. 

work too hard

How often have the words wear out and work too hard occurred in a corpus of books? (source: Google Ngram Viewer )