theologian vs Athanasius the Great

theologian and Athanasius the Great both are nouns.

Word	Noun	Adjective	Verb	Adverb
theologian	Yes	No	No	No
Athanasius the Great	Yes	No	No	No

theologian (noun)	Athanasius the Great (noun)
someone who is learned in theology or who speculates about theology	(Roman Catholic Church) Greek patriarch of Alexandria who championed Christian orthodoxy against Arianism; a church father, saint, and Doctor of the Church (293-373)