honesty vs probity

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. 

probity

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

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