Sergei Rachmaninoff vs Sergei Vasilievich Rachmaninoff

Sergei Rachmaninoff and Sergei Vasilievich Rachmaninoff both are nouns.

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

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

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

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

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