Zhou Enlai vs Chou En-lai

Zhou Enlai and Chou En-lai both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zhou Enlai	Yes	No	No	No
Chou En-lai	Yes	No	No	No

As nouns, Zhou Enlai and Chou En-lai are synonyms defined as:

Zhou Enlai and Chou En-lai: Chinese revolutionary and communist leader (1898-1976)

Other synonyms of Zhou Enlai include Zhou En-lai.

Zhou Enlai (noun)	Chou En-lai (noun)
Chinese revolutionary and communist leader (1898-1976)	Chinese revolutionary and communist leader (1898-1976)