Napoleon vs custard slice

Napoleon

name
  • An unincorporated community in Mississippi. 

  • A city in Missouri. 

  • A city, the county seat of Henry County, Ohio. 

  • A township in Henry County, Ohio. 

  • Napoleon Bonaparte. 

  • A village in Silesia, Poland. 

  • A ghost town in Arkansas. 

  • An unincorporated community in Kentucky. 

  • A city, the county seat of Logan County, North Dakota. 

  • A township and census-designated place therein, in Jackson County, Michigan. 

  • A town in Indiana. 

  • A male given name from Italian sometimes given in honor of the French emperor. 

custard slice

noun
  • Synonym of vanilla slice 

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