hearty vs infirm

hearty

adj
  • Promoting strength; nourishing. 

  • Cheerful, vivacious. 

  • Exhibiting strength; firm 

  • Energetic, active or eager. 

  • warm and cordial towards another person 

infirm

adj
  • Weak or ill, not in good health. 

  • Irresolute; weak of mind or will. 

  • Frail; unstable; insecure. 

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

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