burp vs chunder

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. 

chunder

verb
  • To throw up, to vomit. 

  • Of a motor vehicle: to rumble loudly, to roar. 

noun
  • An act of vomiting. 

  • Heavy, sticky snow that makes snowsports difficult. 

  • Vomit. 

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