Sergei Vasilievich Rachmaninov vs Sergei Rachmaninoff

Sergei Vasilievich Rachmaninov and Sergei Rachmaninoff both are nouns.

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

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

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

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

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