modest vs vain

modest

adj
  • Not bragging or boasting about oneself or one's achievements; unpretentious, humble. 

  • Intending to avoid the encouraging of sexual attraction in others. 

  • Pure and delicate from a sense of propriety. 

  • Small, moderate in size. 

vain

adj
  • Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason. 

  • Showy; ostentatious. 

  • Effecting no purpose; pointless, futile. 

  • Having no real substance, value, or importance; empty; void; worthless; unsatisfying. 

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