This is the 8717th most frequent Polish word.
republika
"Republika" in Polish means "republic," a form of government in which power resides with elected individuals or representatives and typically has no monarch.
Here, 'republiki' is in the plural form, describing political systems of South American countries as republics.
Większość krajów w Ameryce Południowej to republiki.
Most countries in South America are republics.
Here, 'republika' is used to describe the type of government system of Poland, emphasizing its characteristic as a parliamentary republic.
Polska jest republiką parlamentarną.
Poland is a parliamentary republic.
In this sentence, 'Republika' refers to the title of a philosophical work by Plato, showcasing its use as a proper noun.