regionalism vs foreign policy

regionalism and foreign policy both are nouns.

Word	Noun	Adjective	Verb	Adverb
regionalism	Yes	No	No	No
foreign policy	Yes	No	No	No

As nouns, foreign policy is a hypernym of regionalism; that is, foreign policy is a word with a broader meaning than regionalism:

regionalism: a foreign policy that defines the international interests of a country in terms of particular geographic areas
foreign policy: a policy governing international relations

regionalism (noun)	foreign policy (noun)
loyalty to the interests of a particular region	a policy governing international relations
a feature (as a pronunciation or expression or custom) that is characteristic of a particular region
a foreign policy that defines the international interests of a country in terms of particular geographic areas