journey vs train ferry

journey

noun
  • A set amount of travelling, seen as a single unit; a discrete trip, a voyage. 

  • A group of giraffes. 

  • Any process or progression likened to a journey, especially one that involves difficulties or personal development. 

  • The weight of finished coins delivered at one time to the Master of the Mint. 

verb
  • To travel, to make a trip or voyage. 

train ferry

noun
  • A ferry used to transport rail vehicles from one railway line to another across a stretch of water. 

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