forget vs shelter

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). 

shelter

verb
  • To take cover. 

  • To provide cover from damage or harassment; to shield; to protect. 

noun
  • A refuge, haven or other cover or protection from something. 

  • An institution that provides temporary housing for homeless people, battered women, etc. 

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