This is the 4691st most frequent Polish word.
narodów
"Narodów" means "of nations" or "nations'."
Here, 'narodów' is used in the genitive plural form, meaning 'of nations', showing possession or association.
Liga Narodów została założona w 1920 roku.
The League of Nations was established in 1920.
In this sentence, 'narodami' refers to 'nations' in the instrumental plural form, indicating the means or manner.
Pokój między narodami jest warunkiem stabilizacji światowej.
Peace among nations is a condition for global stabilization.
Here, 'narodów' is in the genitive plural form again, denoting association or collective participation of 'nations'.