rectitude vs rightness

rectitude

noun
  • Straightness; the state or quality of having a constant direction and not being crooked or bent. 

  • Conformity to the rules prescribed for moral conduct; (moral) uprightness, virtue. 

rightness

noun
  • The characteristic of being right; correctness. 

  • The result or product of being right; something correct. 

  • The property of being on, or moving toward, the right. 

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