People's Republic of China vs brown sauce

People's Republic of China and brown sauce both are nouns.

Word	Noun	Adjective	Verb	Adverb
People's Republic of China	Yes	No	No	No
brown sauce	Yes	No	No	No

People's Republic of China (noun)	brown sauce (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	bouillon or beef stock thickened with butter and flour roux and variously seasoned with herbs or Worcestershire etc.
	a sauce based on soy sauce