aggrandize vs richen

aggrandize

verb
  • To make great or greater in power, rank, honor, or wealth (applied to persons, countries, etc.). 

  • To make appear great or greater; to exalt. 

  • To make great; to enlarge; to increase. 

  • To increase or become great. 

richen

verb
  • To make or render rich or richer. 

  • To become rich or richer; become superior in quality, condition or effectiveness. 

  • To gain richness; become heightened or intensified in brilliancy. 

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