make it up to vs refund

make it up to

verb

  • To pay back; to return someone a previous good deed. 

  • to redeem oneself 

refund

verb

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

noun

  • An amount of money returned. 

How often have the words make it up to and refund occurred in a corpus of books? (source: Google Ngram Viewer )