flapjack vs latke

flapjack

noun
  • A pancake. 

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

latke

noun
  • A pancake fried in oil, usually made from potatoes and sometimes also onions, traditionally served on Hanukkah. 

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