Sergei Rachmaninoff vs Sergei Vasilievich Rachmaninov

Sergei Rachmaninoff and Sergei Vasilievich Rachmaninov both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sergei Rachmaninoff	Yes	No	No	No
Sergei Vasilievich Rachmaninov	Yes	No	No	No

As nouns, Sergei Rachmaninoff and Sergei Vasilievich Rachmaninov are synonyms defined as:

Sergei Rachmaninoff and Sergei Vasilievich Rachmaninov: composer and piano virtuoso born in Russia (1873-1943)

Other synonyms of Sergei Rachmaninoff include Rachmaninoff, Rachmaninov, Sergei Rachmaninov, Sergei Vasilievich Rachmaninoff.

Sergei Rachmaninoff (noun)	Sergei Vasilievich Rachmaninov (noun)
composer and piano virtuoso born in Russia (1873-1943)	composer and piano virtuoso born in Russia (1873-1943)