This is the 7154th most frequent Polish word.
islandia
Iceland.
Here, 'Islandia' is used as a proper noun referring to the country Iceland.
Islandia jest krajem położonym na wyspie.
Iceland is a country located on an island.
Here, 'Islandii' is the genitive form of 'Islandia,' indicating possession or relation to Iceland in the context of traveling.
Podczas podróży do Islandii, zwiedziłem wiele pięknych miejsc.
During my trip to Iceland, I visited many beautiful places.
Here, 'Islandii' again appears in the genitive case, showing that the conversation is about Iceland.