dead-end vs pigeonhole

dead-end

verb
  • To come to a dead-end. 

adj
  • Going nowhere; blocked. 

noun
  • A road with no exit. 

  • A position that offers no hope of progress. 

pigeonhole

verb
  • To put aside, to not act on (proposals, suggestions, advice). 

  • To categorize; especially to limit or be limited to a particular category, role, etc. 

noun
  • A category. 

  • One of an array of compartments for housing pigeons. 

  • One of an array of compartments for receiving mail and other messages at a college, office, etc. 

  • One of an array of compartments for storing scrolls at a library. 

  • A similar compartment in a desk, used for sorting and storing papers. 

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