effervesce vs over-enthuse

effervesce

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

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

  • To show high spirits. 

over-enthuse

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