probity vs righteousness

probity

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

righteousness

noun
  • The quality or state of being righteous. 

  • Holiness; conformity of life to the divine law. 

  • The act or conduct of one who is righteous. 

  • A righteous act, or righteous quality. 

  • The state of being right with God; justification; the work of Christ, which is the ground justification. 

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