annatto vs chili pepper

annatto

noun
  • A tropical American evergreen shrub, Bixa orellana; the lipstick tree; the fruit of the tree. 

  • The seed of this tree used as a colouring or in Latin American cooking. 

  • An orange-red dye obtained from this seed. 

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