crème vs sour cream

crème

noun
  • A very sugary, fluffy white cream derivative. 

  • Cream 

verb
  • To whip into a thick creamy texture. 

adj
  • Synonym of cream 

sour cream

noun
  • Cream which has been treated with a benign bacterium to turn it slightly sour, often used as a condiment, or a topping for baked potatoes. 

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