mom vs mommy

mom

noun
  • Mother. 

  • An adult female owner of a pet. 

verb
  • To care for in a motherly way. 

mommy

noun
  • Mother. 

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

adj
  • Characteristic of a mother; motherly. 

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