Sergei Pavlovich Diaghilev vs Diaghilev

Sergei Pavlovich Diaghilev and Diaghilev both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sergei Pavlovich Diaghilev	Yes	No	No	No
Diaghilev	Yes	No	No	No

As nouns, Sergei Pavlovich Diaghilev and Diaghilev are synonyms defined as:

Sergei Pavlovich Diaghilev and Diaghilev: Russian ballet impresario who founded the Russian ballet and later introduced it to the West (1872-1929)

Other synonyms of Sergei Pavlovich Diaghilev include Sergei Diaghilev.

Sergei Pavlovich Diaghilev (noun)	Diaghilev (noun)
Russian ballet impresario who founded the Russian ballet and later introduced it to the West (1872-1929)	Russian ballet impresario who founded the Russian ballet and later introduced it to the West (1872-1929)