neglect vs retain

neglect

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

  • To fail to care for or attend to something. 

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

  • 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. 

retain

verb
  • To hold back (a pupil) instead of allowing them to advance to the next class or year. 

  • To employ by paying a retainer. 

  • To keep in one's pay or service. 

  • To keep in possession or use. 

  • To hold secure. 

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