burp vs swirl

burp

verb
  • To utter by burping 

  • To cause someone (such as a baby) to burp. 

  • To open (a container of fermenting substance) to allow the release of accumulated gas. 

  • To emit a burp. 

noun
  • A belch. 

swirl

verb
  • To twist or whirl, as an eddy. 

  • To be arranged in a twist, spiral or whorl. 

  • To circulate. 

noun
  • The upward rushing of a fish through the water to take the bait. 

  • A twist or coil of something. 

  • A whirling eddy. 

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