karkonoszy

In a sentence

• Wędrując przez szlaki Karkonoszy, można spotkać piękne wodospady.

  While hiking through the trails of the Karkonosze, one can encounter beautiful waterfalls.

  Here, 'Karkonoszy' is the genitive plural form of 'Karkonosze', used to indicate possession or association with the trails located within the Karkonosze Mountains.

• Legenda Karkonoszy opowiada o duchu gór zwanym Liczyrzepa.

  The legend of the Karkonosze tells about a mountain spirit named Liczyrzepa.

  In this sentence, 'Karkonoszy' again uses the genitive case but is singular, referring to the legend specific to the Karkonosze Mountain region.

• Jako miłośnik Karkonoszy, chętnie odwiedzam tamtejsze skały i jaskinie.

  As a lover of the Karkonosze, I eagerly visit the rocks and caves there.

  Here, 'Karkonoszy' denotes an attachment or admiration towards the region, employing the genitive case to express belonging or affinity.