This is the 4252nd most frequent Spanish word.
nacionales
"Nationals" or "domestic."
The word 'nacionales' is used as an adjective to describe parks, indicating that they belong to the nation or country.
Los parques nacionales son muy visitados por los turistas.
National parks are frequently visited by tourists.
Here, 'nacionales' acts as an adjective describing the teams, suggesting that they represent their nation.
Los equipos nacionales participaron en el torneo internacional.
The national teams participated in the international tournament.
In this context, 'nacionales' describes news broadcast that pertains to or is relevant to the nation as a whole.