卵

1. Origins, structure, and basic meaning

• Structure: 卵(たまご) refers to an animal's egg; in a food context it can mean a chicken egg.
• Basic usage: Context identifies the particular egg, such as a breakfast ingredient or a bird's egg in a nest.

2. Common pitfalls and similar expressions

• Counting
  • 卵を二つ counts eggs with つ.
  • 卵を二個 instead uses 個.