expedition vs impediment

expedition

noun
  • A military journey; an enterprise against some enemy or into enemy territory. 

  • An important or long journey, for example a march or a voyage 

  • The group of people making such excursion. 

  • A trip, especially a long one, made by a person or a group of people for a specific purpose 

  • The process or activities of performing expediter tasks. 

verb
  • To take part in a trip or expedition; to travel. 

impediment

noun
  • Baggage, especially that of an army; impedimenta. 

  • A disability, especially one affecting the hearing or speech. 

  • A hindrance; that which impedes or obstructs progress. 

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