This is the 8064th most frequent Polish word.
niewidomych
"Of the blind" or "blind people."
Here, 'niewidomych' is used as an adjective in the plural form with the genitive case, describing 'osób' (people). It indicates the characteristic of people being blind.
Życie niewidomych osób może być pełne wyzwań.
The life of blind people can be full of challenges.
In this sentence, 'niewidomych' is used in the genitive plural case as part of the noun 'grupę' (group) to specify the type of group encountered as 'blind people'.
Na ulicy spotkałem grupę niewidomych.
On the street, I encountered a group of blind people.
Here, 'niewidomych' functions in the genitive plural case to refer to the education aspect as related to blind individuals.