keep at arm's length vs skirt around

keep at arm's length

verb
  • Avoid direct confrontation or struggle. 

  • Avoid a close relationship. 

  • Keep at a distance, away from one's body. 

skirt around

verb
  • To circumvent, to bypass, to go around in order to avoid. 

How often have the words keep at arm's length and skirt around occurred in a corpus of books? (source: Google Ngram Viewer )