catwalk vs portico

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. 

portico

noun
  • A porch, or a small space with a roof supported by columns, serving as the entrance to a building. 

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