casserole vs serving dish

casserole

noun
  • Food that fills the high-walled dish or pan that it was cooked in. 

  • Food, such as a stew, cooked in such a dish. 

  • A dish of glass or earthenware, with a lid, in which food is baked and sometimes served. 

verb
  • To cook like, or as, a casserole; to stew. 

serving dish

noun
  • A plate or dish or platter used to hold food to be served during a meal, but not used in cooking. 

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