Dead-end and Obstacle

Dead-end verb - To come to an end.

Obstacle and dead-end are semantically related. in cul-de-sac topic. In some cases you can use "Obstacle" instead a noun phrase "Dead-end".

Obstacle noun - Something that makes movement or progress difficult.

Dead-end and obstacle are semantically related. Sometimes you can replace phrase "Dead-end" with "Obstacle", this terms are similar.