bab vs preemie

bab

noun

  • Baby 

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

verb

  • To fish for eels using a bab. 

preemie

noun

  • A baby that has been born prematurely 

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