St. Augustine vs saint

St. Augustine and saint both are nouns.

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

St. Augustine (noun)	saint (noun)
a resort city in northeastern Florida; the oldest city in the United States	person of exceptional holiness
(Roman Catholic Church) one of the great Fathers of the early Christian church; after a dramatic conversion to Christianity he became bishop of Hippo Regius in North Africa; St. Augustine emphasized man's need for grace (354-430)	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

St. Augustine (verb)	saint (verb)
	declare (a dead person) to be a saint
	hold sacred