mami vs mother-in-law

mami

noun
  • mommy, mother 

  • attractive woman; momma 

  • a term of affection for a woman 

mother-in-law

noun
  • The mother of one's spouse. 

  • A mother-in-law sandwich. 

  • A mother-in-law apartment. 

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