inn vs youth hostel

inn

noun
  • Any establishment where travellers can procure lodging, food, and drink. 

  • A tavern. 

  • One of the colleges (societies or buildings) in London, for students of the law barristers. 

youth hostel

noun
  • An inexpensive supervised lodging place, primarily for young people. 

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