外国人

1. Origins, structure, and basic meaning

• Structure: 外国人（がいこくじん） means a person from another country, relative to the country being considered.
• Basic usage: Use it when describing the national background of a traveler or coworker.

2. Common pitfalls and similar expressions

• A foreign person versus someone arriving from abroad
  • 外国人 focuses on being a person of another country.
  • 海外から来た人 describes arrival from abroad and can include a national of that country returning home.