Stony Tunguska vs Tunguska

Stony Tunguska and Tunguska both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stony Tunguska	Yes	No	No	No
Tunguska	Yes	No	No	No

As nouns, Stony Tunguska and Tunguska are synonyms defined as:

Stony Tunguska and Tunguska: a river in Siberia that flows northwest to become a tributary of the Yenisei River

Other synonyms of Stony Tunguska include Podkamennaya Tunguska River.

Stony Tunguska (noun)	Tunguska (noun)
a river in Siberia that flows northwest to become a tributary of the Yenisei River	a river in southeastern Siberia that flows northwest from Lake Baikal to become a tributary of the Yenisei River
	a river that arises to the north of Lake Baikal and flows north and west to the Yenisei River
	a river in Siberia that flows northwest to become a tributary of the Yenisei River