burp vs effervesce

burp

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

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

  • To utter by burping 

  • To emit a burp. 

noun
  • A belch. 

effervesce

verb
  • To emit small bubbles of dissolved gas; to froth or fizz. 

  • To escape from solution in a liquid in the form of bubbles. 

  • To show high spirits. 

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