Caesar vs Gaius Julius Caesar

Caesar and Gaius Julius Caesar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caesar	Yes	No	No	No
Gaius Julius Caesar	Yes	No	No	No

As nouns, Caesar and Gaius Julius Caesar are synonyms defined as:

Caesar and Gaius Julius Caesar: conqueror of Gaul and master of Italy (100-44 BC)

Other synonyms of Caesar include Julius Caesar.

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