caramelize vs sauté

caramelize

verb
  • To brown (sugar, or a foodstuff containing sugar) by means of heat. 

  • To undergo this kind of conversion or browning. 

  • To convert (sugar) into caramel. 

sauté

verb
  • To cook (food) using a small amount of fat in an open pan over a relatively high heat, allowing the food to brown and form a crust stopping it from sticking to the pan as it cooks. 

noun
  • A dish prepared this way. 

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