Canton vs Kwangchow

Canton and Kwangchow both are nouns.

Word	Noun	Adjective	Verb	Adverb
Canton	Yes	No	No	No
Kwangchow	Yes	No	No	No

As nouns, Canton and Kwangchow are synonyms defined as:

Canton and Kwangchow: a city on the Zhu Jiang delta in southern China; the capital of Guangdong province and a major deep-water port

Other synonyms of Canton include Guangzhou, Kuangchou.

Canton (noun)	Kwangchow (noun)
a city on the Zhu Jiang delta in southern China; the capital of Guangdong province and a major deep-water port	a city on the Zhu Jiang delta in southern China; the capital of Guangdong province and a major deep-water port