сестара

In a sentence

• Имам две сестара које живе у Паризу.

  I have two sisters who live in Paris.

  In this sentence, 'сестара' is the genitive plural of 'сестра' used to indicate the number of sisters in a possessive context.

• Број сестара у овој гимназији је порастао.

  The number of nuns in this high school has increased.

  Here, 'сестара' is genitive plural, as used in quantifying or collective contexts, referring to nuns in this specific example.

• Причала ми је о својим најбољим сестарама.

  She told me about her best sisters.

  In this usage, 'сестарама' is used in the instrumental plural case to describe sharing or discussion among the sisters.