Anton Rubinstein vs Anton Grigorevich Rubinstein

Anton Rubinstein and Anton Grigorevich Rubinstein both are nouns.

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

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

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

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

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