fumble vs go ahead

fumble

verb
  • To handle nervously or awkwardly. 

  • To grope about in perplexity; to seek awkwardly. 

  • To drop a ball or a baton etc. by accident. 

  • To handle much; to play childishly; to turn over and over. 

  • To blunder uncertainly. 

  • To grope awkwardly in trying to find something 

noun
  • A ball etc. that has been dropped by accident. 

  • A dessert similar to a cross between a fool and a crumble. 

go ahead

verb
  • To proceed with; to begin. 

  • Used to grant permission for or to give endorsement of a suggestion or proposal. 

  • To send communication over the radio. 

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