mami vs motherling

mami

noun
  • mommy, mother 

  • attractive woman; momma 

  • a term of affection for a woman 

motherling

noun
  • Mother. 

  • A mother, especially a precious one. 

  • A woman's child. 

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