sponge cake vs torte

sponge cake

noun
  • A light, soft, baked dessert (commonly layered with cream and jam) that is typically made with flour, sugar, baking powder and eggs, and has a firm, yet well aerated structure, similar to that of a sea sponge. 

torte

noun
  • A rich, dense cake, typically made with many eggs and relatively little flour (as opposed to a sponge cake or gâteau). 

How often have the words sponge cake and torte occurred in a corpus of books? (source: Google Ngram Viewer )