People's Republic of China vs Inner Mongolia

People's Republic of China and Inner Mongolia both are nouns.

Word	Noun	Adjective	Verb	Adverb
People's Republic of China	Yes	No	No	No
Inner Mongolia	Yes	No	No	No

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