What is the difference between chili flakes and red pepper flakes?

Chili flakes and red pepper flakes are often used interchangeably, but there is a subtle difference between the two. Chili flakes are typically made from a variety of dried chili peppers, while red pepper flakes are specifically made from dried red peppers, such as cayenne peppers. Both add heat and flavor to dishes, but red pepper flakes may be slightly spicier due to the specific type of pepper used.