entertain vs quander

entertain

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

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

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

quander

verb
  • To ponder or wonder about. 

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