Piedmont vs Piemonte

Piedmont and Piemonte both are nouns.

Word	Noun	Adjective	Verb	Adverb
Piedmont	Yes	No	No	No
Piemonte	Yes	No	No	No

As nouns, Piedmont and Piemonte are synonyms defined as:

Piedmont and Piemonte: the region of northwestern Italy; includes the Po valley

Piedmont (noun)	Piemonte (noun)
the region of northwestern Italy; includes the Po valley	the region of northwestern Italy; includes the Po valley
the plateau between the coastal plain and the Appalachian Mountains: parts of Virginia and North and South Carolina and Georgia and Alabama