Aeneas Silvius vs Pius II

Aeneas Silvius and Pius II both are nouns.

Word	Noun	Adjective	Verb	Adverb
Aeneas Silvius	Yes	No	No	No
Pius II	Yes	No	No	No

As nouns, Aeneas Silvius and Pius II are synonyms defined as:

Aeneas Silvius and Pius II: Italian pope from 1458 to 1464 who is remembered for his unsuccessful attempt to lead a crusade against the Turks (1405-1464)

Other synonyms of Aeneas Silvius include Enea Silvio Piccolomini, Pope Pius II.

Aeneas Silvius (noun)	Pius II (noun)
Italian pope from 1458 to 1464 who is remembered for his unsuccessful attempt to lead a crusade against the Turks (1405-1464)	Italian pope from 1458 to 1464 who is remembered for his unsuccessful attempt to lead a crusade against the Turks (1405-1464)