cancel vs jettison

cancel

verb
  • To invalidate or annul something. 

  • To cross out something with lines etc. 

  • To offset or equalize something. 

  • To kill. 

  • To remove a common factor from both the numerator and denominator of a fraction, or from both sides of an equation. 

  • To cease to provide financial or moral support to (someone deemed unacceptable). Compare cancel culture. 

  • To stop production of a programme. 

  • To mark something (such as a used postage stamp) so that it can't be reused. 

noun
  • A cancellation (US); (nonstandard in some kinds of English). 

  • The page thus suppressed. 

  • A control message posted to Usenet that serves to cancel a previously posted message. 

  • The page that replaces it. 

  • The suppression on striking out of matter in type, or of a printed page or pages. 

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 cancel and jettison occurred in a corpus of books? (source: Google Ngram Viewer )