Cincinnati chili vs chili pepper

Cincinnati chili

noun
  • A regional style of chili con carne, especially in the greater Cincinnati area, characterized by seasonings such as cinnamon, cloves, allspice, and chocolate, and commonly served over spaghetti or as a hot dog sauce. 

chili pepper

noun
  • Any fruit of a plant of the botanical genus Capsicum, which has a spicy/burning flavour because it contains capsaicin. (Not all chili peppers are particularly spicy, but all true chili peppers contain some capsaicin, in contrast to e.g. the bell pepper, which is not a true chili pepper and does not.) 

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