This is the 4085th most frequent Russian word.
оксана
"Оксана" is a Russian and Ukrainian female given name.
In this sentence, 'Оксана' is a proper noun and serves as the subject of the sentence, denoting a person's name.
Оксана была лучшей студенткой в классе.
Oksana was the best student in the class.
Here, 'Оксана' is used as the name of a musical band, highlighting a different context for the word.
Мои родители познакомились на концерте группы 'Оксана'.
My parents met at a concert of the band 'Oksana'.
In this case, 'Оксана' is used metaphorically to denote a common association the speaker makes with a characteristic, illustrating cultural or contextual specificities.