church doctrine vs ism

church doctrine and ism both are nouns.

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

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

church doctrine: the written body of teachings of a religious group that are generally accepted by that group
ism: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of church doctrine include doctrine, philosophical system, philosophy, school of thought.

church doctrine (noun)	ism (noun)
the written body of teachings of a religious group that are generally accepted by that group	a belief (or system of beliefs) accepted as authoritative by some group or school