river vs Yangtze

river and Yangtze both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Yangtze	Yes	No	No	No

river (noun)	Yangtze (noun)
a large natural stream of water (larger than a creek)	the longest river of Asia; flows eastward from Tibet into the East China Sea near Shanghai