River Tyne vs Tyne River

River Tyne and Tyne River both are nouns.

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

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

River Tyne and Tyne River: a river in northern England that flows east to the North Sea

Other synonyms of River Tyne include Tyne.

River Tyne (noun)	Tyne River (noun)
a river in northern England that flows east to the North Sea	a river in northern England that flows east to the North Sea