splendor vs éclat

splendor

noun
  • Great light, luster or brilliance. 

  • Great fame or glory. 

  • Magnificent appearance, display or grandeur. 

éclat

noun
  • A brilliant or successful effect; brilliance of success or effort; splendor; brilliant show; striking effect; glory; renown. 

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