call back vs forget

call back

verb
  • To return to a shop or residence one has previously visited. 

  • To request someone's return. 

  • To telephone someone again at a more convenient time. 

noun
  • Request for a second interview or audition, following a successful initial interview. 

forget

verb
  • To unintentionally leave something behind. 

  • To lose remembrance of. 

  • To unintentionally not do, neglect. 

  • To cease remembering. 

  • Euphemism for fuck, screw (a mild oath). 

How often have the words call back and forget occurred in a corpus of books? (source: Google Ngram Viewer )