provincialism vs localism

provincialism and localism both are nouns.

Word	Noun	Adjective	Verb	Adverb
provincialism	Yes	No	No	No
localism	Yes	No	No	No

As nouns, provincialism and localism are synonyms defined as:

Other synonyms of provincialism include sectionalism.

provincialism (noun)	localism (noun)
a partiality for some particular place	a partiality for some particular place
a lack of sophistication	a phrase or pronunciation that is peculiar to a particular locality