haleness vs tonicity

haleness

noun
  • The state or quality of being hale. 

tonicity

noun
  • The ability of nonpenetrable solutes in a solution to exert an osmotic pressure upon a membrane 

  • The normal presence of tone or tension in a muscle or organ; tonus 

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