dignity vs self-confidence

dignity

noun
  • The state of being dignified or worthy of esteem: elevation of mind or character. 

  • One holding high rank; a dignitary. 

  • High office, rank, or station. 

  • Decorum, formality, stateliness. 

  • The male genitalia. 

self-confidence

noun
  • The state of being self-confident 

  • A measure of one's belief in one's own abilities 

How often have the words dignity and self-confidence occurred in a corpus of books? (source: Google Ngram Viewer )