Obstacle
Obstacle noun - Something that makes movement or progress difficult.
Wall
Wall noun - A physical object that blocks the way.
Usage example: an ancient wall that was built to block the invading barbarians
Obstacle is a synonym for wall in help topic. You can use "Obstacle" instead a noun "Wall", if it concerns topics such as obstruction.
Mutual synonyms
How words are described
Both words in one sentence
- In video games, particularly in driving games, it doesn't matter how fast you crash into a wall or an obstacle.
Source: In-Vehicle Invulnerability -
Oh, and from 2 onwards, Frozen Wario is pretty much entirely based around this annoyance, since it's used to send Wario flying back off ledges uncontrollably until he hits a wall or obstacle.
Source: Ledge Bats - The Flesh Cubes are even more insane in this regard - they leave behind a blazing fire trail when darting about the room, and release bullets when they collide with an obstacle or wall.
Source: Demonic Spiders / Roguelikes
Cite this Source
Wall and Obstacle. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/obstacle/wall
Obstacle & Wall. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/obstacle/wall>.
Wall or Obstacle. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/obstacle/wall.
Google Ngram Viewer shows how "obstacle" and "wall" have occurred on timeline