bundle of joy vs cosset

bundle of joy

noun
  • A pet. 

  • A newborn baby or child of any age. 

cosset

noun
  • A pet, usually a pet lamb. 

  • Someone indulged or cosseted. 

verb
  • To treat like a pet; to overly indulge. 

  • To fondle; to touch or stroke lovingly. 

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