国語

1. Origins, structure, and basic meaning

• Structure: 国語, read こくご, refers to a country's language and, in Japanese schools, the subject devoted to Japanese language arts.
• Basic usage: In この学校では日本語を国語として教えている。, the school teaches Japanese as its national language.

2. Common pitfalls and similar expressions

• The school's language context
  • 国語の授業 refers to Japanese language arts in a Japanese school context. The national-language label is interpreted from that educational setting, not from the reader's own country.