tenet vs creed

tenet and creed both are nouns.

Word	Noun	Adjective	Verb	Adverb
tenet	Yes	No	No	No
creed	Yes	No	No	No

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

tenet: a religious doctrine that is proclaimed as true without proof
creed: the written body of teachings of a religious group that are generally accepted by that group

Other hypernyms of tenet include church doctrine, gospel, religious doctrine.

tenet (noun)	creed (noun)
a religious doctrine that is proclaimed as true without proof	any system of principles or beliefs
	the written body of teachings of a religious group that are generally accepted by that group