Pope Pius IX vs Pius IX

Pope Pius IX and Pius IX both are nouns.

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

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

Pope Pius IX and Pius IX: Italian pope from 1846 to 1878 who in 1854 declared the dogma of the Immaculate Conception of the Virgin Mary

Other synonyms of Pope Pius IX include Giovanni Maria Mastai-Ferretti, Giovanni Mastai-Ferretti.

Pope Pius IX (noun)	Pius IX (noun)
Italian pope from 1846 to 1878 who in 1854 declared the dogma of the Immaculate Conception of the Virgin Mary	Italian pope from 1846 to 1878 who in 1854 declared the dogma of the Immaculate Conception of the Virgin Mary