creepage vs zigzag

creepage

noun
  • A gradual, creeping movement. 

  • The leakage of an electrical current across the surface of an insulator (dielectric) 

zigzag

noun
  • One of these sharp turns. 

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

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

adv
  • in a zigzag manner or pattern 

adj
  • Moving in, or having a zigzag. 

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