catwalk vs promenade deck

catwalk

noun
  • An elevated enclosed passage providing access fore and aft from the bridge of a merchant vessel. 

  • A narrow elevated stage on which models parade; a runway 

  • Any similar elevated walkway. 

  • The business of making clothes for fashion shows. 

promenade deck

noun
  • An upper deck on a passenger ship on which passengers may walk, which can be covered but open to the air. 

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