fencing vs fighting

fencing

noun
  • 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). 

  • Receiving and buying of stolen goods. 

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

fighting

noun
  • A fight or battle; an occasion on which people fight 

  • The act or process of contending; violence or conflict. 

adj
  • Engaged in war or other conflict. 

  • Apt to provoke a fight. 

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