Tacitus vs Gaius Cornelius Tacitus

Tacitus and Gaius Cornelius Tacitus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tacitus	Yes	No	No	No
Gaius Cornelius Tacitus	Yes	No	No	No

As nouns, Tacitus and Gaius Cornelius Tacitus are synonyms defined as:

Tacitus and Gaius Cornelius Tacitus: Roman historian who wrote major works on the history of the Roman Empire (56-120)

Other synonyms of Tacitus include Publius Cornelius Tacitus.

Tacitus (noun)	Gaius Cornelius Tacitus (noun)
Roman historian who wrote major works on the history of the Roman Empire (56-120)	Roman historian who wrote major works on the history of the Roman Empire (56-120)