dead-end vs inaccessible

dead-end

adj
  • Going nowhere; blocked. 

verb
  • To come to a dead-end. 

noun
  • A road with no exit. 

  • A position that offers no hope of progress. 

inaccessible

adj
  • Not able to be reached; unattainable. 

  • Not able to be accessed; out of reach; inconvenient. 

noun
  • An uncountable regular cardinal number that is a limit cardinal. 

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