barbed wire vs paling

barbed wire

noun
  • Twisted strands of steel wire, often coated with zinc, having barbs evenly spaced along them; used to construct agricultural and military fences. 

paling

noun
  • A fence made of galvanized sheeting. 

  • A pointed stick used to make a fence. 

  • A fence made of palings. 

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