bone in the throat vs obstruction

bone in the throat

noun
  • A source of continuing annoyance; a hindrance. 

obstruction

noun
  • Something which obstructs or impedes, either intentionally or unintentionally 

  • The act of obstructing, or state of being obstructed. 

  • The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. 

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