saint vs St. Ambrose

saint and St. Ambrose both are nouns.

Word	Noun	Adjective	Verb	Adverb
saint	Yes	No	Yes	No
St. Ambrose	Yes	No	No	No

saint (noun)	St. Ambrose (noun)
person of exceptional holiness	(Roman Catholic Church) Roman priest who became bishop of Milan; the first Church Father born and raised in the Christian faith; composer of hymns; imposed orthodoxy on the early Christian church and built up its secular power; a saint and Doctor of the Church (340?-397)
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. Ambrose (verb)
declare (a dead person) to be a saint
hold sacred