Pearl River vs Canton River

Pearl River and Canton River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pearl River	Yes	No	No	No
Canton River	Yes	No	No	No

As nouns, Pearl River and Canton River are synonyms defined as:

Pearl River and Canton River: a river in southeast China that flows into the South China Sea

Other synonyms of Pearl River include Chu Kiang, Zhu Jiang.

Pearl River (noun)	Canton River (noun)
a river in Mississippi that flows southward to the Gulf of Mexico	a river in southeast China that flows into the South China Sea
a river in southeast China that flows into the South China Sea