Saint Francis vs saint

Saint Francis and saint both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Francis	Yes	No	No	No
saint	Yes	No	Yes	No

Saint Francis (noun)	saint (noun)
a tributary of the Mississippi River that rises in Missouri and flows southeastward through Arkansas	person of exceptional holiness
(Roman Catholic Church) an Italian and the Roman Catholic monk who founded the Franciscan order of friars (1181-1226)	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 Francis (verb)	saint (verb)
	declare (a dead person) to be a saint
	hold sacred