burp vs gurgle

burp

verb
  • To emit a burp. 

  • 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. 

noun
  • A belch. 

gurgle

verb
  • To flow with a bubbling sound. 

  • To make such a sound. 

noun
  • A gurgling sound. 

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