brush off vs take care of

brush off

verb
  • To disregard (something), to dismiss or ignore (someone), as unimportant. 

  • Used other than figuratively or idiomatically: see brush, off. To remove something with a brush. 

take care of

verb
  • To deal with, handle. 

  • To look after, to provide care for. 

  • To kill. 

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