Rubinstein vs Arthur Rubinstein

Rubinstein and Arthur Rubinstein both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rubinstein	Yes	No	No	No
Arthur Rubinstein	Yes	No	No	No

As nouns, Rubinstein and Arthur Rubinstein are synonyms defined as:

Rubinstein and Arthur Rubinstein: United States pianist (born in Poland) known for his interpretations of the music of Chopin (1886-1982)

Other synonyms of Rubinstein include Artur Rubinstein.

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