erase vs sign on

erase

verb
  • To remove a runner from the bases via a double play or pick off play 

  • To kill; assassinate. 

  • To obliterate (information) from a storage medium, such as to clear or to overwrite. 

  • To obliterate information from (a storage medium), such as to clear or (with magnetic storage) to demagnetize. 

  • To disregard (a group, an orientation, etc.); to prevent from having an active role in society. 

  • to remove markings or information 

  • To be erased (have markings removed, have information removed, or be cleared of information). 

noun
  • The operation of deleting data. 

sign on

verb
  • To begin broadcasting a radio or television signal, usually at the beginning of a broadcasting day and after being off the air for several hours. 

  • To commit oneself, as to a project, a goal, an organization, a cause. 

  • To join something, after signing. 

  • To apply to receive unemployment benefits. 

  • To log on; to start using a computer, radio, etc., or to start talking. 

noun
  • The time of day when a radio or television station begins broadcasting, usually after being off the air for several hours. 

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