cloudy vs nacreous

cloudy

adj
  • Covered with or characterised by clouds; overcast. 

  • Using or relating to cloud computing. 

  • Containing pith 

  • Not transparent or clear. 

  • Uncertain; unclear. 

nacreous

adj
  • Exhibiting lustrous or rainbow-like colors. 

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

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