honesty vs rectitude

honesty

noun
  • The act, quality, or condition of being honest. 

  • Any of various crucifers in the genus Lunaria, several of which are grown as ornamentals, particularly Lunaria annua. 

rectitude

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

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

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