pope vs Catholic Pope

pope and Catholic Pope both are nouns.

Word	Noun	Adjective	Verb	Adverb
pope	Yes	No	No	No
Catholic Pope	Yes	No	No	No

As nouns, pope and Catholic Pope are synonyms defined as:

Other synonyms of pope include Bishop of Rome, Holy Father, pontiff, Roman Catholic Pope, Vicar of Christ.

pope (noun)	Catholic Pope (noun)
the head of the Roman Catholic Church	the head of the Roman Catholic Church