Spanish omelette vs omelette

Spanish omelette

noun
  • A molded omelette made with the addition of fried potatoes and often onions. 

omelette

noun
  • A form of shellcode that searches the address space for multiple small blocks of data ("eggs") and recombines them into a larger block to be executed. 

  • A dish made with beaten eggs cooked in a frying pan without stirring, flipped over to cook on both sides, and sometimes filled or topped with cheese, chives or other foodstuffs. 

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