Cathay vs Great Proletarian Cultural Revolution

Cathay and Great Proletarian Cultural Revolution both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cathay	Yes	No	No	No
Great Proletarian Cultural Revolution	Yes	No	No	No

Cathay (noun)	Great Proletarian Cultural Revolution (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	a radical reform in China initiated by Mao Zedong in 1965 and carried out largely by the Red Guard; intended to eliminate counterrevolutionary elements in the government it resulted in purges of the intellectuals and socioeconomic chaos