austere vs modest

austere

adj
  • Lacking decoration; trivial; not extravagant or gaudy 

  • Grim or severe in manner or appearance 

modest

adj
  • Pure and delicate from a sense of propriety. 

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

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

  • Small, moderate in size. 

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