dulce de leche vs gummi

dulce de leche

noun
  • A South American sweet spread made from sugar and boiled milk. 

gummi

noun
  • A sugary, gelatinous material used to make candies. 

  • A candy made of this material. 

How often have the words dulce de leche and gummi occurred in a corpus of books? (source: Google Ngram Viewer )