范畴 (fàn chóu): Category (Noun) — Meaning & Stroke Order

These books belong to different categories.

In mathematics, a set is an important category.

Daily expenses and investment planning are entirely two different economic domains.

His explanation did not touch the core of the issue; instead, it blurred the scope of the discussion.

His research covers multiple academic fields, including philosophy and sociology.

Whether in artistic creation or scientific research, innovation is always one of the core domains.