天然

1. Origins, structure, and basic meaning

• Structure: 天然 (てんねん) means natural rather than artificially made or altered. It appears as material origin and classification of a formation.
• Basic usage: Soap uses natural fragrance; a cave is a natural formation untouched by people.

2. Common pitfalls and similar expressions

• Naturally sourced ingredient and nonartificial landform
  • 天然の香料 concerns source; 天然のもの concerns formation. The word does not automatically guarantee safety.