profiterole vs puff pastry

profiterole

noun
  • A small, hollow case of choux pastry with a filling. 

puff pastry

noun
  • A light, flaky pastry that is made of alternating buttery and floury dough layers by repeatedly folding the rolled pastry into many layers. 

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