Caesar vs Sid Caesar

Caesar and Sid Caesar both are nouns.

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

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

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

Other synonyms of Caesar include Sidney Caesar.

Caesar (noun)	Sid Caesar (noun)
conqueror of Gaul and master of Italy (100-44 BC)	United States comedian who pioneered comedy television shows (born 1922)
United States comedian who pioneered comedy television shows (born 1922)