cayenne vs red pepper

cayenne

noun
  • spice in a figurative sense. 

red pepper

noun
  • Spicy pepper. 

  • A red-colored, ripe, bell or sweet pepper. Unripe peppers of this variety are green and edible but not as sweet. 

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