tenet vs religious doctrine

tenet and religious doctrine both are nouns.

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

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

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

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

tenet (noun)	religious 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