忠実

1. Origins, structure, and basic meaning

• Structure: 忠実, read ちゅうじつ, combines loyalty 忠 with truth or substance 実 to express faithfulness.
• Basic usage: 設計図に忠実な模型 faithfully follows an original, while 主人に忠実な犬 means loyal.

2. Common pitfalls and similar expressions

• Distinguishing meanings
  • The followed standard or person takes に; distinguish accurate reproduction from loyalty in a relationship.