hearty vs robust

hearty

adj
  • Exhibiting strength; firm 

  • Cheerful, vivacious. 

  • Energetic, active or eager. 

  • warm and cordial towards another person 

  • Promoting strength; nourishing. 

robust

adj
  • Requiring strength or vigor. 

  • Sensible (of intellect etc.); straightforward, not given to or confused by uncertainty or subtlety. 

  • Designed or evolved in such a way as to be resistant to total failure despite partial damage. 

  • Not greatly influenced by errors in assumptions about the distribution of sample errors. 

  • Resistant or impervious to failure regardless of user input or unexpected conditions. 

  • Of an individual or skeletal element: strongly built; muscular; not gracile. 

  • Violent; rough; rude. 

  • Evincing strength and health; strong; (often, especially) both large and healthy. 

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