Sir John Gielgud vs Gielgud

Sir John Gielgud and Gielgud both are nouns.

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

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

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

Other synonyms of Sir John Gielgud include Arthur John Gielgud.

Sir John Gielgud (noun)	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)