shipping vs voyage

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. 

voyage

noun
  • A long journey, especially by ship. 

verb
  • To go on a long journey. 

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