look around vs root about

look around

verb
  • To search a place. 

  • Used other than figuratively or idiomatically: see look, around. 

  • To take note of what is going on; to make oneself aware. 

  • To turn one's head to see what is behind oneself. 

  • To inspect a building or area. 

root about

verb
  • To search for something in a similar manner. 

  • To rummage; to look for something in a somewhat aimless fashion. 

  • To forage by poking the snout here and there. 

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