dim sum vs People's Republic of China

dim sum and People's Republic of China both are nouns.

Word	Noun	Adjective	Verb	Adverb
dim sum	Yes	No	No	No
People's Republic of China	Yes	No	No	No

dim sum (noun)	People's Republic of China (noun)
traditional Chinese cuisine; a variety of foods (including several kinds of steamed or fried dumplings) are served successively in small portions	a communist nation that covers a vast territory in eastern Asia; the most populous country in the world