regret vs weep

regret

verb
  • To feel sorry about (any thing). 

  • To feel sorry about (a thing that has or has not happened), afterthink: to wish that a thing had not happened, that something else had happened instead. 

noun
  • Emotional pain on account of something done or experienced in the past, with a wish that it had been different; a looking back with dissatisfaction or with longing. 

  • The amount of avoidable loss that results from choosing the wrong action. 

weep

verb
  • To lament; to complain. 

  • To produce secretions. 

  • To cry; to shed tears, especially when accompanied with sobbing or other difficulty speaking, as an expression of emotion such as sadness or joy. 

  • To give off moisture in small quantities, e.g. due to condensation. 

  • To hang the branches, as if in sorrow; to be pendent; to droop; said of a plant or its branches. 

  • To flow in drops; to run in drops. 

noun
  • A session of crying. 

  • A sob. 

  • A lapwing; wipe, especially, a northern lapwing (Vanellus vanellus). 

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