This is the 2910th most frequent Polish word.
modyfikacji
"Modification."
The word 'modyfikacji' is used in the genitive case to indicate changes done to a given object, emphasizing their enhancing nature by context here.
Wprowadzenie modyfikacji do projektu poprawiło jego funkcjonalność.
Introducing modifications to the project improved its functionality.
In this instance, 'modyfikacje' is in the accusative plural form, referring to adjustments suggested or agreed upon in a formal or structured document.
Komitet zgodził się na pewne modyfikacje w regulaminie.
The committee agreed to certain modifications in the regulations.
Here, 'modyfikacji' again appears in the genitive case, emphasizing the centrality of modifications to the subject of discourse.