Pope Leo XIII vs Gioacchino Pecci

Pope Leo XIII and Gioacchino Pecci both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pope Leo XIII	Yes	No	No	No
Gioacchino Pecci	Yes	No	No	No

As nouns, Pope Leo XIII and Gioacchino Pecci are synonyms defined as:

Pope Leo XIII and Gioacchino Pecci: Italian pope from 1878 to 1903 who was interested in the advancement of learning and who opened the Vatican secret archives to all scholars

Other synonyms of Pope Leo XIII include Giovanni Vincenzo Pecci, Leo XIII.

Pope Leo XIII (noun)	Gioacchino Pecci (noun)
Italian pope from 1878 to 1903 who was interested in the advancement of learning and who opened the Vatican secret archives to all scholars	Italian pope from 1878 to 1903 who was interested in the advancement of learning and who opened the Vatican secret archives to all scholars