ailing vs healthy

ailing

adj
  • Sickly; sick; ill; unwell. 

noun
  • An ailment. 

healthy

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

  • Conducive to health. 

  • Evincing health. 

  • Significant, hefty; beneficial. 

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