give someone the runaround vs placate

give someone the runaround

verb
  • To delay, dodge, or frustrate (someone), especially by providing useless information or directions. 

placate

verb
  • To calm; to bring peace to; to influence someone who was furious to the point that they become content or at least no longer irate. 

How often have the words give someone the runaround and placate occurred in a corpus of books? (source: Google Ngram Viewer )