Pope Pius II vs Pius II

Pope Pius II and Pius II both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pope Pius II	Yes	No	No	No
Pius II	Yes	No	No	No

As nouns, Pope Pius II and Pius II are synonyms defined as:

Pope Pius II 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 Pope Pius II include Aeneas Silvius, Enea Silvio Piccolomini.

Pope Pius II (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)