regionalism

nouns

a feature (as a pronunciation or expression or custom) that is characteristic of a particular region
is a type of (narrower)
speech that differs from the usual accepted, easily recognizable speech of native adult members of a speech community
a foreign policy that defines the international interests of a country in terms of particular geographic areas
is a type of (narrower)
a policy governing international relations
loyalty to the interests of a particular region
is a type of (narrower)
the quality of being loyal