This is the 149th most frequent Icelandic word.
vestfjarða
"Vestfjarða" means "of the Westfjords," referring to a region in northwest Iceland.
The word "Vestfjarða" here is in the genitive case to signify possession, indicating that the weather belongs to the Westfjords.
Vestfjarða veðrið hefur verið óvenju gott undanfarið.
The Westfjords' weather has been unusually good lately.
"Vestfjarða" here is used in the accusative plural, indicating movement through or around the area.
Við ferðumst um Vestfjarða á sumrin og njótum náttúrunnar.
We travel around the Westfjords in the summers and enjoy nature.
Here, "Vestfjarða" is used in the genitive case to specify that the history belongs to the Westfjords.