Serge Koussevitzky vs Sergei Aleksandrovich Koussevitzky

Serge Koussevitzky and Sergei Aleksandrovich Koussevitzky both are nouns.

Word	Noun	Adjective	Verb	Adverb
Serge Koussevitzky	Yes	No	No	No
Sergei Aleksandrovich Koussevitzky	Yes	No	No	No

As nouns, Serge Koussevitzky and Sergei Aleksandrovich Koussevitzky are synonyms defined as:

Serge Koussevitzky and Sergei Aleksandrovich Koussevitzky: United States conductor (born in Russia) who was noted for performing the works of contemporary composers (1874-1951)

Other synonyms of Serge Koussevitzky include Koussevitzky.

Serge Koussevitzky (noun)	Sergei Aleksandrovich Koussevitzky (noun)
United States conductor (born in Russia) who was noted for performing the works of contemporary composers (1874-1951)	United States conductor (born in Russia) who was noted for performing the works of contemporary composers (1874-1951)