Giovanni Maria Mastai-Ferretti vs Pius IX

Giovanni Maria Mastai-Ferretti and Pius IX both are nouns.

Word	Noun	Adjective	Verb	Adverb
Giovanni Maria Mastai-Ferretti	Yes	No	No	No
Pius IX	Yes	No	No	No

As nouns, Giovanni Maria Mastai-Ferretti and Pius IX are synonyms defined as:

Giovanni Maria Mastai-Ferretti 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 Giovanni Maria Mastai-Ferretti include Giovanni Mastai-Ferretti, Pope Pius IX.

Giovanni Maria Mastai-Ferretti (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