This is the 8073rd most frequent Polish word.
nikaragua
Nikaragua: Nicaragua (a country in Central America).
In this sentence, 'Nikaragua' is a noun used as a proper name to denote a specific country.
Nikaragua jest krajem w Ameryce Środkowej.
Nicaragua is a country in Central America.
Here, 'Nikaragua' is used in its genitive form ('Nikaragui'), indicating the destination of the trip.
Podróż do Nikaragui była bardzo ekscytująca.
The trip to Nicaragua was very exciting.
Similarly, 'Nikaragua' takes the genitive form ('Nikaragui') to express 'of Nicaragua' in relation to its culture.