This is the 981st most frequent German word.
austria
In German, "Austria" refers to the country Austria ("Österreich" in German).
Here, 'Österreich' functions as a proper noun, referring to the country itself.
Österreich ist ein Land in Mitteleuropa.
Austria is a country in Central Europe.
In this sentence, 'Österreich' is used as a destination name, a place one travels to.
Wenn ich nach Österreich reise, besuche ich immer Wien.
When I travel to Austria, I always visit Vienna.
The term 'österreichische' is the adjectival form of 'Österreich', describing cultural attributes of Austria.