PRC vs Communist China

PRC and Communist China both are nouns.

Word	Noun	Adjective	Verb	Adverb
PRC	Yes	No	No	No
Communist China	Yes	No	No	No

As nouns, PRC and Communist China are synonyms defined as:

PRC and Communist China: a communist nation that covers a vast territory in eastern Asia; the most populous country in the world

Other synonyms of PRC include Cathay, China, mainland China, People's Republic of China, Red China.

PRC (noun)	Communist China (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	a communist nation that covers a vast territory in eastern Asia; the most populous country in the world