Titus vs Titus Flavius Vespasianus

Titus and Titus Flavius Vespasianus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Titus	Yes	No	No	No
Titus Flavius Vespasianus	Yes	No	No	No

As nouns, Titus and Titus Flavius Vespasianus are synonyms defined as:

Titus and Titus Flavius Vespasianus: Emperor of Rome; son of Vespasian (39-81)

Other synonyms of Titus include Titus Vespasianus Augustus.

Titus (noun)	Titus Flavius Vespasianus (noun)
a New Testament book containing Saint Paul's epistle to Titus; contains advice on pastoral matters	Emperor of Rome; son of Vespasian (39-81)
Emperor of Rome; son of Vespasian (39-81)
a Greek disciple and helper of Saint Paul