tenet vs church doctrine

tenet and church doctrine both are nouns.

Word	Noun	Adjective	Verb	Adverb
tenet	Yes	No	No	No
church doctrine	Yes	No	No	No

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

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

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

tenet (noun)	church doctrine (noun)
a religious doctrine that is proclaimed as true without proof	the written body of teachings of a religious group that are generally accepted by that group