barbed wire vs wire netting

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. 

wire netting

noun
  • A hexagonal network of interwoven wire used in fencing; chicken wire. 

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