give up vs jettison

give up

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

  • 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 surrender (someone or something) 

  • To lose hope concerning (someone or something) 

jettison

verb
  • To let go or get rid of as being useless or defective. 

  • To eject from a boat, submarine, aircraft, spaceship or hot-air balloon, so as to lighten the load. 

noun
  • Items that have been or are about to be ejected from a boat or balloon. 

  • The action of jettisoning items. 

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