infirm vs stalwart

infirm

adj
  • Irresolute; weak of mind or will. 

  • Weak or ill, not in good health. 

  • Frail; unstable; insecure. 

verb
  • To contradict, to provide proof that something is not. 

stalwart

adj
  • Determined; staunch. 

  • Firmly or solidly built. 

  • Courageous. 

noun
  • One who is dependable. 

  • One who has a strong build. 

  • One who firmly supports a cause. 

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