knock about vs zig

knock about

verb
  • To move or roam around aimlessly. 

  • To be mislaid in a place. 

  • To engage in a relaxing activity in a place; to hang around in. 

  • To be present at or inhabit a certain place. 

  • Often followed by with: to spend time companionably; to hang around. 

  • To live an unconventional life. 

  • To hit (someone or something) all over repeatedly; hence, to behave violently towards or mistreat (someone or something). 

zig

verb
  • To make such a turn. 

noun
  • A sudden or sharp turn or change of direction. 

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