about time vs shortly

about time

adv
  • Close to the right time. 

  • Far past the desired time. 

  • Used other than figuratively or idiomatically: see about, time. 

shortly

adv
  • In or after a short time; soon. 

  • In a short or brief time or manner; quickly. 

  • In few words 

  • In an irritable ("short") manner. 

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