lallygag vs mill about

lallygag

verb
  • To dawdle; to be lazy or idle; to avoid necessary work or effort. 

noun
  • Horseplay, fooling around. 

  • A layabout, one who lallygags. 

mill about

verb
  • To move or circulate in a confused or disorderly manner within a limited area. 

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