Anton Rubenstein vs Anton Gregor Rubinstein

Anton Rubenstein and Anton Gregor Rubinstein both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anton Rubenstein	Yes	No	No	No
Anton Gregor Rubinstein	Yes	No	No	No

As nouns, Anton Rubenstein and Anton Gregor Rubinstein are synonyms defined as:

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

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

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