dead-end vs hermetic

dead-end

adj

  • Going nowhere; blocked. 

noun

  • A road with no exit. 

  • A position that offers no hope of progress. 

verb

  • To come to a dead-end. 

hermetic

adj

  • Isolated, away from outside influence. 

  • Pertaining to alchemy or occult practices; magical, alchemical. 

  • Pertaining to Hermes Trismegistus or the writings attributed to him. 

  • Hermetically sealed. 

  • One who follows/worships Hermes. 

  • Pertaining ancient Greek Olympian God Hermes 

How often have the words dead-end and hermetic occurred in a corpus of books? (source: Google Ngram Viewer )