barque vs sailing ship

barque

noun
  • A sailing vessel or boat of any kind. 

  • A sailing vessel of three or more masts, with all masts but the sternmost square-rigged, the sternmost being fore-and-aft-rigged 

sailing ship

noun
  • A ship with masts and sails, powered by the wind. 

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