expansionism vs doctrine

expansionism and doctrine both are nouns.

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

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

expansionism: the doctrine of expanding the territory or the economic influence of a country
doctrine: a belief (or system of beliefs) accepted as authoritative by some group or school

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

expansionism (noun)	doctrine (noun)
the doctrine of expanding the territory or the economic influence of a country	a belief (or system of beliefs) accepted as authoritative by some group or school