Rubinstein vs Anton Grigorevich Rubinstein

Rubinstein and Anton Grigorevich Rubinstein both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rubinstein	Yes	No	No	No
Anton Grigorevich Rubinstein	Yes	No	No	No

As nouns, Rubinstein and Anton Grigorevich Rubinstein are synonyms defined as:

Rubinstein and Anton Grigorevich Rubinstein: Russian composer and pianist (1829-1894)

Other synonyms of Rubinstein include Anton Gregor Rubinstein, Anton Rubenstein, Anton Rubinstein.

Rubinstein (noun)	Anton Grigorevich Rubinstein (noun)
Russian composer and pianist (1829-1894)	Russian composer and pianist (1829-1894)
United States pianist (born in Poland) known for his interpretations of the music of Chopin (1886-1982)