saint vs St. Gregory of Nazianzen

saint and St. Gregory of Nazianzen both are nouns.

Word	Noun	Adjective	Verb	Adverb
saint	Yes	No	Yes	No
St. Gregory of Nazianzen	Yes	No	No	No

saint (noun)	St. Gregory of Nazianzen (noun)
person of exceptional holiness	(Roman Catholic Church) a church father known for his constant fight against perceived heresies; a saint and Doctor of the Church (329-391)
model of excellence or perfection of a kind; one having no equal
a person who has died and has been declared a saint by canonization

saint (verb)	St. Gregory of Nazianzen (verb)
declare (a dead person) to be a saint
hold sacred