Zhou En-lai vs Chou En-lai

Zhou En-lai and Chou En-lai both are nouns.

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

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

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

Other synonyms of Zhou En-lai include Zhou Enlai.

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