unbranched vs zigzag

unbranched

adj
  • straight-chain 

  • Having no branches 

zigzag

adv
  • in a zigzag manner or pattern 

adj
  • Moving in, or having a zigzag. 

noun
  • A line or path that proceeds by sharp turns in alternating directions. 

  • One of these sharp turns. 

verb
  • To move or to twist in a zigzag manner. 

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