theologian vs St. Athanasius

theologian and St. Athanasius both are nouns.

Word	Noun	Adjective	Verb	Adverb
theologian	Yes	No	No	No
St. Athanasius	Yes	No	No	No

theologian (noun)	St. Athanasius (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)