Tsaritsyn vs Volgograd

Tsaritsyn and Volgograd both are nouns.

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

As nouns, Tsaritsyn and Volgograd are synonyms defined as:

Tsaritsyn 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 Tsaritsyn include Stalingrad.

Tsaritsyn (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