luminous vs rayless

luminous

adj
  • Brightly illuminated. 

  • Clear; enlightening; easy to understand. 

  • Emitting light; glowing brightly; shining. 

rayless

adj
  • Lacking florets. 

  • Lacking rays. 

  • Lightless, gloomy. 

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