Arthur John Gielgud vs Sir John Gielgud

Arthur John Gielgud and Sir John Gielgud both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arthur John Gielgud	Yes	No	No	No
Sir John Gielgud	Yes	No	No	No

As nouns, Arthur John Gielgud and Sir John Gielgud are synonyms defined as:

Arthur John Gielgud and Sir John Gielgud: English actor of Shakespearean roles who was also noted for appearances in films (1904-2000)

Other synonyms of Arthur John Gielgud include Gielgud.

Arthur John Gielgud (noun)	Sir John Gielgud (noun)
English actor of Shakespearean roles who was also noted for appearances in films (1904-2000)	English actor of Shakespearean roles who was also noted for appearances in films (1904-2000)