mummy vs old lady

mummy

noun
  • mother. 

  • Any naturally preserved human or animal body. 

  • An embalmed human or animal corpse wrapped in linen bandages for burial, especially as practised by the ancient Egyptians and some Native American tribes. 

  • A reanimated embalmed human corpse, as a stock character in horror films. 

  • A substance used in medicine, prepared from mummified flesh. 

old lady

noun
  • One's mother. 

  • The Bank of England, sometimes referred to as the “Old Lady of Threadneedle Street” or simply “The Old Lady”. 

  • A queen. 

  • An elderly woman. 

  • One's girlfriend, wife or significant other. 

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