aft vs shipping

aft

noun
  • The stern portion of a vessel. 

adv
  • At, near, or towards the stern of a vessel (with the frame of reference within the vessel). 

adj
  • located at the back of a boat, ship, or airplane 

shipping

noun
  • Passage or transport on a ship. 

  • The transportation of goods. 

  • The body of ships belonging to one nation, port or industry; ships collectively. 

  • Navigation. 

  • The cost of sending an item or package via postal services. 

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