(armed) struggle vs fighting

(armed) struggle

fighting

adj
  • Engaged in war or other conflict. 

  • Apt to provoke a fight. 

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

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

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