fight off vs give up

fight off

verb
  • To succeed in defeating a challenge, or an attack. 

  • To resist, particularly an infection or an emotion. 

give up

verb
  • To admit defeat, capitulate 

  • Become fully taken over by a certain quality, activity, trait, &c. 

  • To abandon (someone or something) 

  • To relinquish (something) 

  • To execute a trade on behalf of another broker. 

  • To stop or quit (an activity, etc.) 

  • To surrender (someone or something) 

  • To lose hope concerning (someone or something) 

How often have the words fight off and give up occurred in a corpus of books? (source: Google Ngram Viewer )