豚骨

1. Origins, structure, and basic meaning

• Structure: 豚骨 is read as とんこつ and is a noun for pork bones or the rich broth made by simmering them.
• Basic usage: Simmering pork bones for broth appears in 豚骨を煮込む, while rich pork-bone ramen appears in 濃厚な豚骨ラーメン.

2. Common pitfalls and similar expressions

• Bones and broth
  • In preparation contexts it denotes the bones themselves; in ramen names it denotes the broth style made from them.
• Difference from 豚肉
  • Unlike 豚肉, which denotes pork meat, this word focuses on the bones and broth made from them.