flannel cake vs flapjack

flannel cake

noun
  • a thin batter cake fried on both sides. 

flapjack

noun
  • A pancake. 

  • A bar made of (though not limited to) rolled oats, butter, golden syrup, and brown sugar, baked in a tray. 

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