River Tyne vs Tyne

River Tyne and Tyne both are nouns.

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

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

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

Other synonyms of River Tyne include Tyne River.

River Tyne (noun)	Tyne (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