Tunguska vs Stony Tunguska

Tunguska and Stony Tunguska both are nouns.

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

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

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

Other synonyms of Tunguska include Podkamennaya Tunguska River.

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