beignet vs jam doughnut

beignet

noun
  • A Louisiana-style fried doughnut or fritter covered in powdered sugar. 

  • A fritter (with a fruit or vegetable filling). 

jam doughnut

noun
  • A doughnut filled with jam and usually topped with sugar. 

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