expedition vs gridlock

expedition

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

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

  • The group of people making such excursion. 

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

  • 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. 

gridlock

verb
  • To cause traffic congestion. 

noun
  • any paralysis of a complex system due to severe congestion, conflict, or deadlock. 

  • A condition of total, interlocking traffic congestion on the streets or highways of a crowded city, in which no one can move because everyone is in someone else's way. 

  • On a smaller scale: the situation in which cars enter a signal-controlled intersection too late during the green light cycle, and are unable to clear the intersection (due to congestion in the next block) when the light turns red, thus blocking the cross traffic when it's their turn to go. Repeated at enough intersections, this phenomenon can lead to citywide gridlock. 

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