clear out vs run off

clear out

verb
  • to leave quickly 

  • to become empty 

  • to remove or eject (from), especially forcibly 

  • To rob or steal from (someone). 

  • to completely empty 

  • To be victorious in gambling against (someone). 

run off

verb
  • To flee or depart quickly. 

  • To operate by a particular energy or fuel source. 

  • to have diarrhea 

  • To make photocopies, or print. 

  • To write something quickly. 

  • To pour or spill off or over. 

  • To cause to flow away. 

  • To chase someone away. 

How often have the words clear out and run off occurred in a corpus of books? (source: Google Ngram Viewer )