Artur Rubinstein vs Arthur Rubinstein

Artur Rubinstein and Arthur Rubinstein both are nouns.

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

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

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

Other synonyms of Artur Rubinstein include Rubinstein.

Artur Rubinstein (noun)	Arthur Rubinstein (noun)
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)