Sergei Rachmaninov vs Sergei Vasilievich Rachmaninoff

Sergei Rachmaninov and Sergei Vasilievich Rachmaninoff both are nouns.

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

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

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

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

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