epicureanism vs doctrine

epicureanism and doctrine both are nouns.

Word	Noun	Adjective	Verb	Adverb
epicureanism	Yes	No	No	No
doctrine	Yes	No	No	No

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

epicureanism: a doctrine of hedonism that was defended by several ancient Greek philosophers
doctrine: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of epicureanism include ism, philosophical system, philosophy, school of thought.

epicureanism (noun)	doctrine (noun)
a doctrine of hedonism that was defended by several ancient Greek philosophers	a belief (or system of beliefs) accepted as authoritative by some group or school