bird's eye chili vs red pepper

bird's eye chili

noun
  • A spicy chili pepper, a cultivar from the species Capsicum annuum, commonly found in Southeast Asia. 

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 bird's eye chili and red pepper occurred in a corpus of books? (source: Google Ngram Viewer )