bab vs bundle of joy

bab

noun

  • Baby 

  • A bait for eels, consisting of a bundle of live worms. 

verb

  • To fish for eels using a bab. 

bundle of joy

noun

  • A newborn baby or child of any age. 

  • A pet. 

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