pimento vs sweet pepper plant

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. 

sweet pepper plant

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