Lushunkou District vs mainland China

Lushunkou District and mainland China both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lushunkou District	Yes	No	No	No
mainland China	Yes	No	No	No

Lushunkou District (noun)	mainland China (noun)
a major port city in northeastern China on the Liaodong Peninsula; now a part of Luda	a communist nation that covers a vast territory in eastern Asia; the most populous country in the world