Gridlock and Obstacle

Gridlock noun - A point in a struggle where neither side is capable of winning or willing to give in.

Obstacle and gridlock are semantically related. in traffic jam topic. In some cases you can use "Obstacle" instead a noun "Gridlock".

Obstacle noun - Something that makes movement or progress difficult.

Gridlock and obstacle are semantically related. Sometimes you can use "Gridlock" instead a noun "Obstacle".