credendum vs dogma

credendum and dogma both are nouns.

Word	Noun	Adjective	Verb	Adverb
credendum	Yes	No	No	No
dogma	Yes	No	No	No

As nouns, dogma is a hypernym of credendum; that is, dogma is a word with a broader meaning than credendum:

credendum: (Christianity) any of the sections into which a creed or other statement of doctrine is divided
dogma: a religious doctrine that is proclaimed as true without proof

Other hypernyms of credendum include tenet.

credendum (noun)	dogma (noun)
(Christianity) any of the sections into which a creed or other statement of doctrine is divided	a doctrine or code of beliefs accepted as authoritative
	a religious doctrine that is proclaimed as true without proof