Tacitus vs Publius Cornelius Tacitus

Tacitus and Publius Cornelius Tacitus both are nouns.

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

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

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

Other synonyms of Tacitus include Gaius Cornelius Tacitus.

Tacitus (noun)	Publius 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)