shelter vs wharf

shelter

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

  • To take cover. 

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

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

wharf

verb
  • To secure by a wharf. 

  • To place on a wharf. 

noun
  • The bank of a river, or the shore of the sea. 

  • A man-made landing place for ships on a shore or river bank. 

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