This is the 3629th most frequent Polish word.
federalnej
"Federalnej" means "federal" (feminine singular genitive or locative form in Polish).
The adjective 'federalnej' describes the type of republic (federal).
Konstytucja federalnej republiki została uchwalona.
The constitution of the federal republic was adopted.
The adjective 'federalnej' is used to describe the authority, indicating it is a federal one.
Prezydent federalnej władzy ogłosił nowe reformy.
The president of the federal authority announced new reforms.
Here, 'federalnej' qualifies the structure, showing its federal nature.