装甲

1. Origins, structure, and basic meaning

• Structure: 装甲, read そうこう, means a hard protective covering fitted to a vehicle or similar object, or the protection it provides.
• Basic usage: It is used for a vehicle's protective covering or the remaining armor on a tank.
  • その車両は厚い装甲で乗員を守る設計になっている。

2. Common pitfalls and similar expressions

• Protective focus compared with 武装
  • 装甲 focuses on the covering that protects against attack, while 武装 more broadly refers to being equipped with weapons and combat gear.