Barriers
Obstacle and barriers are semantically related. in obstruction topic. In some cases you can use "Obstacle" instead a noun "Barriers", when it comes to topics like obstruction to goal.
Obstacle
Obstacle noun - Something that makes movement or progress difficult.
Mutual synonyms
Both words in one sentence
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Green gas barriers are a standard obstacle in the Overlord series, usually put in place to keep you from advancing too far until you've gotten your Green Minions back.
Source: Deadly Gas -
They almost never put them on, even during shooting practice, obstacle courses (with fire barriers) and actual combat raids against insurgents.
Source: Goggles Do Nothing -
The implementation of this is a notable high point for the series, given that up until that point, water was an obstacle - creating some of the most tense levels, believable barriers and interesting puzzles - and after that point it is a well implemented gameplay element.
Source: Video Game / Legacy of Kain
Cite this Source
Obstacle and Barriers. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/barriers/obstacle
Barriers & Obstacle. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/barriers/obstacle>.
Obstacle or Barriers. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/barriers/obstacle.
Google Ngram Viewer shows how "barriers" and "obstacle" have occurred on timeline