indecipherable vs spidery

indecipherable

adj
  • Indistinguishable 

  • Not decipherable; impossible to decode, read, understand or comprehend. 

spidery

adj
  • Characterized by many spindly extensions. 

  • Like a spider. 

  • Infested with, or containing many spiders. 

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