original sin vs creed

original sin and creed both are nouns.

Word	Noun	Adjective	Verb	Adverb
original sin	Yes	No	No	No
creed	Yes	No	No	No

As nouns, creed is a hypernym of original sin; that is, creed is a word with a broader meaning than original sin:

original sin: a sin said to be inherited by all descendants of Adam
creed: the written body of teachings of a religious group that are generally accepted by that group

Other hypernyms of original sin include sin, sinning, church doctrine, gospel, religious doctrine.

original sin (noun)	creed (noun)
a sin said to be inherited by all descendants of Adam	any system of principles or beliefs
	the written body of teachings of a religious group that are generally accepted by that group