eject vs sign up

eject

noun
  • an inferred object of someone else's consciousness 

verb
  • To compel (a person or persons) to leave. 

  • To cause (something) to come out of a machine. 

  • To forcefully project oneself or another occupant from an aircraft (or, rarely, another type of vehicle), typically using an ejection seat or escape capsule. 

  • To come out of a machine. 

  • To compel (a sports player) to leave the field because of inappropriate behaviour. 

  • To throw out or remove forcefully. 

sign up

verb
  • To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams) 

  • To agree to purchase some good or service. 

  • To add a name to the list of people who are participating in something. 

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