This is the 2525th most frequent Polish word.
narodowym
"Narodowym" means "national" (instrumental or locative form in Polish).
Here, 'narodowym' appears in its singular masculine instrumental form of 'narodowy,' showing characteristic affiliation to the nation.
Jestem dumny z naszego dziedzictwa narodowego.
I am proud of our national heritage.
Here, 'narodowym' appears in its singular masculine instrumental form of 'narodowy,' functioning as an adjective describing the park.
Weekend spędziliśmy w parku narodowym.
We spent the weekend in the national park.
Here, 'narodowym' serves as the singular masculine instrumental form of the adjective 'narodowy,' attributing the stadium as a singular, defined entity related to the nation.