内臓

1. Origins, structure, and basic meaning

• Structure: In 内臓 (ないぞう), inside 内 and organ 臓 combine to denote internal organs.
• Basic usage: 内臓 denotes bodily organs inside the torso, such as the heart, liver, and stomach.

2. Common pitfalls and similar expressions

• Internal organs versus contents
  • It differs from the contents of a container and from the built-in function of a device.