fencing vs roadblock

fencing

noun
  • Material used to make fences, fences used as barriers or an enclosure. 

  • Receiving and buying of stolen goods. 

  • The art or sport of duelling with swords, especially with the 17th- to 18th-century European dueling swords and the practice weapons descended from them (sport fencing). 

roadblock

noun
  • Something that blocks or obstructs a road. 

  • An obstacle or impediment. 

verb
  • To prevent, hinder. 

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