hot pepper vs pimento

hot pepper

noun
  • Any of the plants that bear such fruit, especially the species Capsicum annuum and Capsicum frutescens and their numerous subspecies, varieties, or cultivars. 

  • Any of various small peppers of highly notable pungency or heat. 

pimento

noun
  • A red sweet pepper, a cultivar of Capsicum annuum, used to make relish, stuffed into olives, or used as spice. 

  • A tropical berry used to make allspice. 

  • The tree on which it grows. 

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