sweet pepper vs tabasco pepper

sweet pepper

noun
  • The fruit of a non-spicy cultivar of pepper, Capsicum annuum, marketed in green-, red-, yellow- and orange-skinned varieties. 

tabasco pepper

noun
  • A variety of chili pepper having a conical shape and a bitter and burning taste, Capsicum frutescens variety tabasco. 

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