This is the 401st most frequent Russian word.
александра
The Russian word "Александра" is a feminine given name, equivalent to "Alexandra" in English.
Here, 'Александра' is used as a proper noun, identifying a person.
Александра пошла в магазин за продуктами.
Alexandra went to the store for groceries.
In this sentence, 'Александры' is the genitive case of 'Александра', indicating possession.
Мы обсуждали стиль и манеру письма Александры.
We discussed Alexandra's style and manner of writing.
Here, 'Александра' is used in an accusative case to indicate the object of the action 'встретил' (I met).