disease-free vs sickening

disease-free

adj
  • free of disease, not having, carrying, or suffering from any disease. 

sickening

adj
  • Causing sickness or disgust. 

  • Amazing, fantastic. 

noun
  • The act of making somebody sick. 

How often have the words disease-free and sickening occurred in a corpus of books? (source: Google Ngram Viewer )