brush off vs overlook

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. 

overlook

verb
  • To pretend not to have noticed (something, especially a mistake or flaw); to pass over (something) without censure or punishment. 

  • To offer a view (of something) from a higher position. 

  • To fail to notice; to look over and beyond (anything) without seeing it. 

noun
  • A vista or point that gives a beautiful view. 

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