beakhead vs catamaran

beakhead

noun
  • A protruding part of the foremost section of a sailing ship. 

  • An ornament used in rich Norman doorways, resembling a head with a beak. 

catamaran

noun
  • A twin-hulled ship or boat. 

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