This is the 3619th most frequent Polish word.
emma
"Emma" is not a Polish word; it is typically a given name.
Here, 'Emma' is a proper noun used as a personal name referring to an individual.
Emma jest moją najlepszą przyjaciółką.
Emma is my best friend.
The word 'Emma' is in the instrumental case 'Emmą', reflecting the Polish grammar for expressing action with a named individual.
Często widuję się z Emmą na kawie.
I often meet with Emma for coffee.
Again, 'Emma' is in instrumental form due to the preposition 'z', which requires this case in Polish for denoting interaction.