chili con carne vs chili pepper

chili con carne

noun
  • A dish of meat and beans in a tomato sauce flavoured with chili peppers. 

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 chili con carne and chili pepper occurred in a corpus of books? (source: Google Ngram Viewer )