blow away vs surprise greatly

blow away

verb
  • To disperse or to depart on currents of air. 

  • Used other than figuratively or idiomatically: see blow, away. 

  • To overwhelm. 

  • To cause to go away by blowing, or by wind. 

  • To cause to go away, to get rid of 

  • To flabbergast; to impress greatly. 

  • To delete (data, files, etc.). 

  • To kill (someone) by shooting them with a firearm. 

surprise greatly

How often have the words blow away and surprise greatly occurred in a corpus of books? (source: Google Ngram Viewer )