cling to vs entertain

cling to

verb
  • Used other than figuratively or idiomatically: see cling, to. 

  • To have an intense emotional dependency on (someone). 

  • To remain by (someone's) side; to refuse to leave the company of. 

entertain

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

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

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

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