Gangnam Zombie

Similarities:
- Includes Zombies, Horror and Survival
- Both are set in South Korea
- Both of them are movies

Difference:
- Gangnam Zombie is in literally in Gangnam
- Train to Busan is taking a train and traveling to Busan
- Gangam Zombie is tryna survive inside a building
- Train to Busan is trying to survive while taking a train to travel to Busan

Similarities:
- Includes zombies, survival and horror
- Are both South Korean
- Trapped in a building with zombies

Differences:
- Gangnam Zombie is inside an office building
- All of Us are Dead is inside a school building
- Gangnam Zombie is a South Korean movie
- All of Us are Dead is a South Korean series

Both are movies about people trapped inside a building during a zombie outbreak.
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Both are about people trapped inside a building during a zombie outbreak with the owners of the building more concerned about their money and status than the people's lives and the lead couple working together to survive.

Both are about zombie apocalypse.
Be sure to watch all parts of Kingdom!!!
This GZ is set on modern times where as Kingdom is set in Joseon times.