Achille Ratti vs Pius XI

Achille Ratti and Pius XI both are nouns.

Word	Noun	Adjective	Verb	Adverb
Achille Ratti	Yes	No	No	No
Pius XI	Yes	No	No	No

As nouns, Achille Ratti and Pius XI are synonyms defined as:

Achille Ratti and Pius XI: pope who signed a treaty with Mussolini recognizing the Vatican City as an independent state (1857-1939)

Other synonyms of Achille Ratti include Ambrogio Damiano Achille Ratti, Pope Pius XI.

Achille Ratti (noun)	Pius XI (noun)
pope who signed a treaty with Mussolini recognizing the Vatican City as an independent state (1857-1939)	pope who signed a treaty with Mussolini recognizing the Vatican City as an independent state (1857-1939)