他人

1. Origins, structure, and basic meaning

• Structure: Written 他人 and read たにん, it denotes another person, often someone outside one's family or close circle.
• Basic usage: It appears in respecting another person's letter and offering help even to a stranger in trouble.

2. Common pitfalls and similar expressions

• Broader than complete stranger
  • The word can mean anyone distinct from oneself in the relevant relationship.