entertain vs harbour

entertain

verb
  • To have someone over at one's home for a party or visit. 

  • To amuse (someone); to engage the attention of agreeably. 

  • To receive and take into consideration; to have a thought in mind. 

harbour

noun
  • Commonwealth standard spelling of harbor. 

verb
  • Commonwealth standard spelling of harbor. 

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