領 域(りょういき)

りょういき

noun

domain; field; territory; area

1. domain; field; area of expertise

A specific area or sphere of activity, knowledge, or responsibility.

To take on a new field.

That is not my area of expertise.

The field of AI research is expanding year by year.

2. territory; region

A physical area or space.

領域(りょういき)を侵(おか)す。

To invade territory.

This island is our country's territory.

You cannot enter another country's territory without permission.

領域(りょういき) covers both abstract domains (fields of knowledge, expertise) and physical territories.

分野(ぶんや): field (of study/work) — more everyday, commonly used for academic or professional fields
範囲(はんい): scope, range — emphasizes boundaries
領土(りょうど): territory — specifically national/political territory

領域(りょういき) is more formal and broader than 分野(ぶんや), and is often used in academic, scientific, and political contexts.

Related Words

general

Added 2026.1.16 16:39 · Revised 2026.8.20 15:21

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