Yalu River vs Red China

Yalu River and Red China both are nouns.

Word	Noun	Adjective	Verb	Adverb
Yalu River	Yes	No	No	No
Red China	Yes	No	No	No

Yalu River (noun)	Red China (noun)
a battle in the Korean War (November 1950); when UN troops advanced north to the Yalu River 200,000 Chinese troops crossed the river and drove them back	a communist nation that covers a vast territory in eastern Asia; the most populous country in the world
river in eastern Asia; rises in North Korea and flows southwest to Korea Bay (forming part of the border between North Korea and China)