river vs Crocodile River

river and Crocodile River both are nouns.

Word	Noun	Adjective	Verb	Adverb
river	Yes	No	No	No
Crocodile River	Yes	No	No	No

river (noun)	Crocodile River (noun)
a large natural stream of water (larger than a creek)	the second largest river in Africa that drains into the Indian Ocean; flows into the Indian Ocean