kaymak vs sweet cream

kaymak

noun
  • A creamy dairy product, similar to clotted cream, made in the Balkans, Turkey, the Middle East, Central Asia, Iran, Afghanistan, and India. It is made from the milk of water buffalos in the East or of cows in the West. 

sweet cream

noun
  • Cream: the oily part of milk that rises to the top. 

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