inclemency vs sternness

inclemency

noun
  • The quality of being inclement; lack of clemency. 

  • Something that is inclement. 

sternness

noun
  • The state or quality of being stern. 

  • The result or product of being stern. 

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