This is the 1818th most frequent Polish word.
świętych
"Świętych" means "saints" in English.
Here, "świętych" is used as a genitive plural form of the noun "święty," referring to saints and indicating possession (lives of saints).
Podziwiamy żywoty świętych, które są zapisem ich duchowej drogi.
We admire the lives of the saints, which are records of their spiritual journeys.
In this sentence, "świętych" is an adjective in the genitive plural form used to describe the type of images (images of saints).
Obrazy świętych zdobią wnętrza wielu kościołów.
Images of saints adorn the interiors of many churches.
Here, "Świętych" is a part of the proper noun "Wszystkich Świętych" (All Saints') and works as part of the name of a specific event.