乳製品

1. Origins, structure, and basic meaning

• Structure: 乳製品（にゅうせいひん） means products made from milk.
• Basic usage: Use it when discussing the sale of milk-based foods or the supply kept in a refrigerator.

2. Common pitfalls and similar expressions

• Milk versus dairy products
  • 牛乳 means cow's milk; 乳製品 groups together products made by processing milk, such as cheese and yogurt.