Scotch pancake vs griddlecake

Scotch pancake

noun
  • A small, often buttered, sweet pancake served as a teatime dessert. 

griddlecake

noun
  • Any of various forms of small pancake made from a spoonful of batter cooked on a griddle 

How often have the words Scotch pancake and griddlecake occurred in a corpus of books? (source: Google Ngram Viewer )