kick someone when they are down vs pour oil on troubled waters

kick someone when they are down

verb
  • To make things worse for someone who is going through a difficult time. 

pour oil on troubled waters

verb
  • To calm, appease or quieten a person or situation. 

How often have the words kick someone when they are down and pour oil on troubled waters occurred in a corpus of books? (source: Google Ngram Viewer )