This is the 281st most frequent Greek word.
βόρεια
"Βόρεια" means "north" or "northern" in English.
In this sentence, "βόρεια" is used as an adverbial phrase indicating direction or location.
Η Θεσσαλονίκη βρίσκεται στα βόρεια της Ελλάδας.
Thessaloniki is located in the north of Greece.
Here, "βόρεια" functions as an adverb describing the direction of the wind.
Ο άνεμος φύσηξε προς τα βόρεια.
The wind blew toward the north.
In this case, "βόρεια" is an adjective modifying the noun "πλευρά", indicating a specific part of the building.