harbor vs sanctuary

harbor

noun
  • Any place of shelter. 

  • A sheltered expanse of water, adjacent to land, in which ships may anchor or dock, especially for loading and unloading. 

  • A mixing box for materials. 

  • A harbor, even if it is a little harbor, is a good thing, since adventurers come into it as well as go out, and the life in it grows strong, because it takes something from the world, and has something to give in return - Sarah Orne Jewett 

verb
  • To take refuge or shelter in a protected expanse of water. 

  • To drive (a hunted stag) to covert. 

  • To hold or persistently entertain in one's thoughts or mind. 

  • To provide a harbor or safe place for. 

sanctuary

noun
  • A place of safety, refuge, or protection. 

  • A state of being protected, asylum. 

  • The consecrated (or sacred) area of a church or temple around its tabernacle or altar. 

  • My car is a sanctuary, where none can disturb me except for people who cut me off. 

  • An area set aside for protection. 

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