Borgia vs Duchess of Ferrara

Borgia and Duchess of Ferrara both are nouns.

Word	Noun	Adjective	Verb	Adverb
Borgia	Yes	No	No	No
Duchess of Ferrara	Yes	No	No	No

As nouns, Borgia and Duchess of Ferrara are synonyms defined as:

Borgia and Duchess of Ferrara: Italian noblewoman and patron of the arts (1480-1519)

Other synonyms of Borgia include Lucrezia Borgia.

Borgia (noun)	Duchess of Ferrara (noun)
Italian pope whose nepotism put the Borgia family in power in Italy (1378-1458)	Italian noblewoman and patron of the arts (1480-1519)
Pope and father of Cesare Borgia and Lucrezia Borgia (1431-1503)
Italian cardinal and military leader; model for Machiavelli's prince (1475-1507)
Italian noblewoman and patron of the arts (1480-1519)