pikelet vs slapjack

pikelet

noun
  • A thick type of sweet pancake. 

  • A thin crumpet. 

  • Any crumpet, regardless of thickness 

slapjack

noun
  • A type of pancake, or flapjack. 

  • A simple card game similar to snap. 

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