Stalingrad vs Volgograd

Stalingrad and Volgograd both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stalingrad	Yes	No	No	No
Volgograd	Yes	No	No	No

As nouns, Stalingrad and Volgograd are synonyms defined as:

Stalingrad and Volgograd: a city in the European part of Russia on the Volga; site of German defeat in World War II in the winter of 1942-43

Other synonyms of Stalingrad include Tsaritsyn.

Stalingrad (noun)	Volgograd (noun)
a city in the European part of Russia on the Volga; site of German defeat in World War II in the winter of 1942-43	a city in the European part of Russia on the Volga; site of German defeat in World War II in the winter of 1942-43