Nei Monggol vs People's Republic of China

Nei Monggol and People's Republic of China both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nei Monggol	Yes	No	No	No
People's Republic of China	Yes	No	No	No

Nei Monggol (noun)	People's Republic of China (noun)
an autonomous region of northeastern China that was annexed by the Manchu rulers in 1635 and became an integral part of China in 1911	a communist nation that covers a vast territory in eastern Asia; the most populous country in the world