ablaze vs rock hard

ablaze

adv
  • On fire; in a blaze. 

  • Lit up brightly and with color, gleaming. 

  • In a state of glowing excitement or ardent desire. 

adj
  • In a state of glowing excitement, ardent desire, or other strong emotion. 

  • Radiant with bright light and color. 

  • Burning fiercely; in a blaze; on fire. 

rock hard

adj
  • With strongly held beliefs and opinions, deep conviction. 

  • As tough, hard, or inflexible as a piece of rock. 

  • With muscles developed and toned to a high degree, especially the muscles of the abdomen. 

  • Having a very fully erect and stiff penis 

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