bab vs bairn

bab

noun

  • Baby 

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

verb

  • To fish for eels using a bab. 

bairn

noun

  • A child or baby. 

verb

  • To make pregnant. 

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