refund vs take care of

refund

verb
  • To return (money) to (someone); to reimburse. 

noun
  • An amount of money returned. 

take care of

verb
  • To deal with, handle. 

  • To look after, to provide care for. 

  • To kill. 

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