reality vs sincerity

reality

noun
  • The state of being actual or real; realness. 

  • The entirety of all that is real. 

  • The real world. 

  • An individual observer's own subjective perception of that which is real. 

  • A real entity, event, or other fact. 

sincerity

noun
  • The quality or state of being sincere 

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