igneous vs red-hot

igneous

adj
  • Resulting from, or produced by, great heat. With rocks, it could also mean formed from lava or magma. 

  • Pertaining to or having the nature of fire; containing fire; resembling fire. 

red-hot

adj
  • very hot 

  • Very fresh, exciting, and up-to-date. 

  • Having a very strong sexual appeal. 

  • Heated to the point that it glows with a visible red color. 

  • Emotionally charged, especially with anger or enthusiasm. 

How often have the words igneous and red-hot occurred in a corpus of books? (source: Google Ngram Viewer )