digress vs zig

digress

verb
  • To turn aside from the right path; to transgress; to offend. 

  • To step or turn aside; to deviate; to swerve; especially, to turn aside from the main subject of attention, or course of argument, in writing or speaking. 

zig

verb
  • To make such a turn. 

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

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