This is the 5569th most frequent Polish word.
urodzinowe
"Urodzinowe" means "birthday-related" in English.
Here, "urodzinowe" modifies "balony," indicating that the balloons are for a birthday purpose.
Kupiliśmy balony urodzinowe.
We bought birthday balloons.
In this case, "urodzinowy" is used to describe "tort," showing that the cake is connected to a birthday celebration.
Tort urodzinowy był naprawdę smaczny.
The birthday cake was really delicious.
The term "urodzinową" describes "kartkę," specifying that the card is intended for a birthday occasion.