Euphrates vs Euphrates River

Euphrates and Euphrates River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Euphrates	Yes	No	No	No
Euphrates River	Yes	No	No	No

As nouns, Euphrates and Euphrates River are synonyms defined as:

Euphrates and Euphrates River: a river in southwestern Asia; flows into the Persian Gulf; was important in the development of several great civilizations in ancient Mesopotamia

Euphrates (noun)	Euphrates River (noun)
a river in southwestern Asia; flows into the Persian Gulf; was important in the development of several great civilizations in ancient Mesopotamia	a river in southwestern Asia; flows into the Persian Gulf; was important in the development of several great civilizations in ancient Mesopotamia