burp vs yodel

burp

noun
  • A belch. 

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

  • To utter by burping 

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

  • To emit a burp. 

yodel

noun
  • An act of yodelling. 

  • A song incorporating yodelling. 

verb
  • To sing (a song) in such a way that the voice fluctuates rapidly between the normal chest voice and falsetto. 

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