steadfastness vs weakness

steadfastness

noun
  • Loyalty in the face of trouble and difficulty. 

  • Steadfast resolution. 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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