smetana vs whipped cream

smetana

noun
  • A form of soured cream or crème fraîche from Central and Eastern Europe. 

whipped cream

noun
  • Thick cream that has had air incorporated into it by rapid beating. 

  • Cream, at least 30% of which is milkfat, possibly also containing emulsifiers and/or stabilizers but nothing else, which is then whipped. 

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