hang about vs start the ball rolling

hang about

verb
  • To linger, loiter, or stay. 

  • Especially in the form to hang about with (someone): to spend time or be friends with. 

intj
  • wait a minute; hold on 

start the ball rolling

verb
  • Synonym of get the ball rolling. 

How often have the words hang about and start the ball rolling occurred in a corpus of books? (source: Google Ngram Viewer )