congestion

/kʊnˈd͡ʒɛʃ.d͡ʒən/

IPA: /K AH0 N JH EH1 S CH AH0 N/

noun
  1. 1

    The hindrance or blockage of the passage of something, for example a fluid, mixture, traffic, people, etc. (due to an excess of this or due to a partial or complete obstruction), resulting in overfilling or overcrowding.

  2. 2

    An excess or accumulation of something

Source: https://en.wiktionary.org/wiki/congestion