tramontana vs boreas

tramontana and boreas both are nouns.

Word	Noun	Adjective	Verb	Adverb
tramontana	Yes	No	No	No
boreas	Yes	No	No	No

As nouns, boreas is a hypernym of tramontana; that is, boreas is a word with a broader meaning than tramontana:

tramontana: a cold dry wind that blows south out of the mountains into Italy and the western Mediterranean
boreas: a wind that blows from the north

Other hypernyms of tramontana include north wind, norther, northerly.

tramontana (noun)	boreas (noun)
a cold dry wind that blows south out of the mountains into Italy and the western Mediterranean	a wind that blows from the north