cookout vs shish kebab

cookout

noun
  • A gathering for a meal that is cooked and eaten outside; either a domestic barbecue or a larger social event. 

shish kebab

noun
  • A dish made of small pieces of meat, with or without vegetables, which are skewered on a wooden or metal stick and roasted in an oven or over an open fire. 

  • A crystal structure consisting of a central spine (the shish) and disks or lumps growing out from it (the kebab). 

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