牛

1. Origins, structure, and basic meaning

• Structure: 牛 is read as うし and is a noun referring broadly to a cow or to cattle.
• Basic usage: Cattle grazing on a farm appears in 牧場で牛が草を食べる, while feeding cattle appears in 牛に餌を与える.

2. Common pitfalls and similar expressions

• Difference from 子牛
  • 子牛 specifies the young calf stage, whereas 牛 refers to cattle without limiting the animal's age.