brush off vs neglect

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. 

neglect

verb
  • To omit to notice; to forbear to treat with attention or respect; to slight. 

  • To fail to do or carry out something due to oversight or carelessness. 

  • To fail to care for or attend to something. 

  • To ignore for the sake of simplifying calculations without significantly affecting accuracy. 

noun
  • Habitual lack of care. 

  • The act of neglecting. 

  • The state of being neglected. 

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