neglect vs pick up on

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. 

pick up on

verb
  • To notice, observe, learn, or understand, especially something otherwise overlooked. 

  • To adopt a practice in which others already engage. 

  • To continue or build upon (for example, a task, analysis, or narrative), beginning from a point at which someone has previously stopped. 

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