tenderness vs tenuity

tenderness

noun
  • a tendency to express warm, compassionate feelings 

  • pain or discomfort when an affected area is touched 

  • concern for the feelings or welfare of others 

tenuity

noun
  • Meagreness, paucity. 

  • Thinness, slenderness. 

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