harbor vs repel

harbor

verb
  • To drive (a hunted stag) to covert. 

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

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

  • To provide a harbor or safe place for. 

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

  • Any place of shelter. 

  • 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 

repel

verb
  • To drive back (an assailant, advancing force etc.). 

  • To ward off (a malignant influence, attack etc.). 

  • To cause repulsion or dislike in; to disgust. 

  • To reject, put off (a request, demand etc.). 

  • To save (a shot). 

  • To force away by means of a repulsive force. 

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