matriarch vs mummy

matriarch

noun
  • The dominant female in a family group of elephants 

  • A female founder of a political or religious movement, an organization or an enterprise. 

  • A female leader of a family, a tribe or an ethnic or religious group. 

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. 

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