weakness vs weariness

weakness

noun
  • The condition of being weak. 

  • An inadequate quality; fault 

  • A special fondness or desire. 

weariness

noun
  • Exhaustion, fatigue or tiredness. 

  • A lack of interest or excitement. 

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