dishonesty vs insincerity

dishonesty

noun
  • The characteristic or condition of being dishonest. 

  • An act which is fraudulent or otherwise dishonest. 

insincerity

noun
  • Property of being insincere, lacking sincerity or truthfulness. 

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