incandescent vs thermic

incandescent

adj
  • Emitting light as a result of being heated. 

  • Showing intense emotion, as of a performance, etc. 

  • Shining very brightly. 

noun
  • An incandescent lamp or bulb 

thermic

adj
  • Of, related to, or associated with heat; thermal. 

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