integrity vs rectitude

integrity

noun
  • Steadfast adherence to a strict moral or ethical code. 

  • Trustworthiness; keeping your word. 

  • The state of being wholesome; unimpaired 

  • With regards to data encryption, ensuring that information is not altered by unauthorized persons in a way that is not detectable by authorized users. 

  • The ability of systems to provide timely warnings to users when they should not be used for navigation. 

  • The quality or condition of being complete; pure 

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 integrity and rectitude occurred in a corpus of books? (source: Google Ngram Viewer )