glittering vs nacreous

glittering

adj
  • Brightly sparkling. 

  • Valuable, desirable. 

noun
  • The appearance of something that glitters. 

nacreous

adj
  • Exhibiting lustrous or rainbow-like colors. 

  • Of, or resembling nacre (mother of pearl). 

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