Mother vs mommy

Mother

name
  • A title given to a nun or a priestess. 

  • One of the triune goddesses of the Lady in Wicca alongside the Crone and Maiden and representing a woman older than a girlish Maiden but younger than an aged Crone. 

  • A title given to the personification of a force of nature or abstract concept, such as Mother Nature, Mother Russia, or Mother Earth. 

mommy

adj
  • Characteristic of a mother; motherly. 

verb
  • To treat someone like a mother would; to mother someone. 

noun
  • Mother. 

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