Pope Pius X vs Pius X

Pope Pius X and Pius X both are nouns.

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

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

Pope Pius X and Pius X: pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)

Other synonyms of Pope Pius X include Giuseppe Melchiorre Sarto, Giuseppe Sarto.

Pope Pius X (noun)	Pius X (noun)
pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)	pope who condemned religious modernism; he was canonized in 1954 because of his interest in the poor (1835-1914)