People's Republic of China vs Yellow River

People's Republic of China and Yellow River both are nouns.

Word	Noun	Adjective	Verb	Adverb
People's Republic of China	Yes	No	No	No
Yellow River	Yes	No	No	No

People's Republic of China (noun)	Yellow River (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	a major river of Asia in northern China; flows generally eastward into the Yellow Sea; carries large quantities of yellow silt to its delta