humanness vs mortality

humanness

noun
  • The condition or quality of being human. 

mortality

noun
  • The state of being susceptible to death. 

  • The number of deaths per given unit of population over a given period of time. 

  • Death. 

  • Deaths resulting from an event (such as a war, epidemic or disaster). 

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