strengthen vs weary

strengthen

verb
  • To reinforce, to add to, to support (someone or something) 

  • To make strong or stronger; to add strength to; to increase the strength of; to fortify. 

  • To empower; to give moral strength to; to encourage; to enhearten. 

  • To grow strong or stronger. 

  • To substantiate; to corroborate (a belief, argument, etc.) 

  • To augment; to improve; to intensify. 

weary

verb
  • To make or to become weary. 

adj
  • Expressive of fatigue. 

  • Having the strength exhausted by toil or exertion; tired; fatigued. 

  • Having one's patience, relish, or contentment exhausted; tired; sick. 

  • Causing weariness; tiresome. 

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