こんざつ混雑konzatsu
1.

A situation where a large number of people or objects are present in a specific area, leading to disorganized movement and difficulty in navigation.

2.

The condition of a place being overly filled, resulting in chaos and a lack of order, often causing delays or interruptions in usual activities.

3.

The state of disorder created by a multitude of individuals or items mingling together, often associated with peak times or busy environments.

Example:

その道は車で混雑している。