sincerity vs uprightness

sincerity

noun
  • The quality or state of being sincere 

uprightness

noun
  • The state of being honest, honourable, and moral. 

  • The product or result of being upright. 

  • The state of being erect or vertical. 

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