berth vs push off

berth

noun
  • A room in which a number of the officers or ship's company mess and reside. 

  • position on the field of play 

  • Room for maneuvering or safety. (Often used in the phrase a wide berth.) 

  • A job or position, especially on a ship. 

  • Position or seed in a tournament bracket. 

  • A fixed bunk for sleeping (in caravans, trains, etc). 

  • A space for a ship to moor or a vehicle to park. 

verb
  • To use a device to bring a spaceship into its berth/dock 

  • to bring (a ship or vehicle) into its berth/berthing 

  • to assign a berth (bunk or position) to 

push off

verb
  • To go away; to get lost. 

  • To delay, postpone, put off, push back. 

  • to commit a foul by pushing against an opponent to both accelerate more quickly and push the opponent in the opposite direction. 

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