Gridiron and Obstacle

Gridiron noun - A cooking utensil of parallel metal bars; used to grill fish or meat.

Obstacle and gridiron are semantically related. In some cases you can use "Obstacle" instead a noun "Gridiron".

Obstacle noun - Something that makes movement or progress difficult.

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