healthy vs unsound

healthy

adj
  • Conducive to health. 

  • Enjoying good health; well; free from disease or disorder. 

  • Evincing health. 

  • Significant, hefty; beneficial. 

unsound

adj
  • Infirm, diseased. 

  • Not whole, not solid, defective. 

  • Not good, unreliable. 

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