nacreous vs wan

nacreous

adj
  • Exhibiting lustrous or rainbow-like colors. 

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

wan

adj
  • Pale, sickly-looking. 

  • Bland, uninterested. 

  • Dim, faint. 

noun
  • The quality of being wan; wanness. 

  • A girl or woman. 

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