Pope Sixtus IV vs Sixtus IV

Pope Sixtus IV and Sixtus IV both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pope Sixtus IV	Yes	No	No	No
Sixtus IV	Yes	No	No	No

As nouns, Pope Sixtus IV and Sixtus IV are synonyms defined as:

Pope Sixtus IV and Sixtus IV: Italian pope from 1471 to 1484 who consented to the establishment of the Spanish Inquisition and built the Sistine Chapel (1414-1484)

Other synonyms of Pope Sixtus IV include Francesco della Rovere.

Pope Sixtus IV (noun)	Sixtus IV (noun)
Italian pope from 1471 to 1484 who consented to the establishment of the Spanish Inquisition and built the Sistine Chapel (1414-1484)	Italian pope from 1471 to 1484 who consented to the establishment of the Spanish Inquisition and built the Sistine Chapel (1414-1484)