- Basic Trope: A large and theoretically insurmountable wall between two (or more) countries, cities, etc.
- Straight: Tropestan builds a 900-meter high wall between itself and Wikistan.
- Exaggerated: The wall extends all around the globe
- It's an Invisible Wall
- Downplayed: Tropestan has a strictly-controlled border with a chain-link fence between itself and Tropestan.
- Justified: Tropestan wants to keep Wikistan out and Tropestan in.
- There are zombies, trolls, etc. on the other side, and Tropestan wants to keep itself safe from them.
- The wall is a mutually-agreed-upon hydroelectric dam.
- Inverted: Tropestan and Wikistan's borders are completely open.
- Subverted: Tropestan partially or completely tears down the wall between itself and Wikistan.
- The borders seem to be open.
- Double Subverted: Because the wall is old and crumbling, and they want to rebuild it.
- There's a wall of Plexiglass between them.
- Parodied: Insurmountable Waist-High Fence
- Zig Zagged: The wall IS effective, but it's easy to get through...if you go through the gates that are along it. Where the tax collectors are (the actual purpose of many historical walls wasn't just defence, but to control passage).
- Averted: Tropestan and Wikistan have no excessively-large wall or fence between their two borders, and in fact may not even have one at all.
- Enforced: ???
- Lampshaded: "We need to build a wall to keep those barbaric Wikistanis out!"
- Invoked: Wikistan and Tropestan go to war, or are on the brink of war
- Tropestan is worried about illegal immigrants from Wikistan
- Exploited: ???
- Defied: Tropestan doesn't have the funds, and Wikistan sure as hell won't pay for it, so Tropestan does not build a wall.
- Discussed: ???
- Conversed: ???
Playing With / The Great Wall