matriarch vs mom

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. 

mom

noun
  • Mother. 

  • An adult female owner of a pet. 

verb
  • To care for in a motherly way. 

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