probity vs uprightness

probity

noun
  • Integrity, especially of the quality of having strong moral principles; decency and honesty. 

uprightness

noun
  • The state of being honest, honourable, and moral. 

  • The product or result of being upright. 

  • The state of being erect or vertical. 

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