Sidney Caesar vs Sid Caesar

Sidney Caesar and Sid Caesar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sidney Caesar	Yes	No	No	No
Sid Caesar	Yes	No	No	No

As nouns, Sidney Caesar and Sid Caesar are synonyms defined as:

Sidney Caesar and Sid Caesar: United States comedian who pioneered comedy television shows (born 1922)

Other synonyms of Sidney Caesar include Caesar.

Sidney Caesar (noun)	Sid Caesar (noun)
United States comedian who pioneered comedy television shows (born 1922)	United States comedian who pioneered comedy television shows (born 1922)