Scotch pancake vs pikelet

Scotch pancake

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

pikelet

noun
  • A thin crumpet. 

  • Any crumpet, regardless of thickness 

  • A thick type of sweet pancake. 

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