butterball vs fussock

butterball

noun
  • A round lump of a coagulated fat used in cooking such as butter, margarine, or a spread 

  • An overweight person. 

  • A small North American duck, the bufflehead, Bucephala albeola 

  • A turkey. 

fussock

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