theologian vs St. Basil the Great

theologian and St. Basil the Great both are nouns.

Word	Noun	Adjective	Verb	Adverb
theologian	Yes	No	No	No
St. Basil the Great	Yes	No	No	No

theologian (noun)	St. Basil the Great (noun)
someone who is learned in theology or who speculates about theology	(Roman Catholic Church) the bishop of Caesarea who defended the Roman Catholic Church against the heresies of the 4th century; a saint and Doctor of the Church (329-379)