This is the 751st most frequent Polish word.
barbara
"Barbara" in Polish is a female given name.
Here, 'Barbara' is used as a proper noun, referring to a person's name.
Barbara jest moją najlepszą przyjaciółką.
Barbara is my best friend.
Here, 'Barbara' appears in its traditional contextual form related to cultural celebrations.
Obchodziliśmy Barbórkę, dzień świętej Barbary.
We celebrated Barbórka, the day of Saint Barbara.
In this sentence, 'Barbary' is the genitive form in Polish showing possession.