good person vs saint

good person and saint both are nouns.

Word	Noun	Adjective	Verb	Adverb
good person	Yes	No	No	No
saint	Yes	No	Yes	No

As nouns, saint is a hyponym of good person; that is, saint is a word with a more specific, narrower meaning than good person:

good person (noun)	saint (noun)
a person who is good to other people	person of exceptional holiness
	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

good person (verb)	saint (verb)
	declare (a dead person) to be a saint
	hold sacred