get past vs pass through

get past

verb
  • To continue around a blockage; to get around (something); to surpass something that is in the way. 

  • To cause someone to overcome a source of grief or get through a difficult time. 

  • To cause something to get around a blockage; to cause to get around or surpass something that is in the way. 

  • To get through a difficult time; to overcome a source of grief. 

pass through

verb
  • To make something move through something else. 

  • To undergo; to experience. 

  • To infiltrate. 

  • To transit something. 

noun
  • A framed, window-like aperture in the interior wall of a house, usually between a kitchen and dining room, through which items (especially food) can be passed. A serving hatch. 

How often have the words get past and pass through occurred in a corpus of books? (source: Google Ngram Viewer )