flail vs zig

flail

verb
  • To move like a flail. 

  • To beat using a flail or similar implement. 

  • To wave or swing vigorously 

  • To thresh. 

noun
  • A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain. 

  • A tool used for threshing, consisting of a long handle with a shorter stick attached with a short piece of chain, thong or similar material. 

zig

verb
  • To make such a turn. 

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

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