skupine

In a sentence

• Na izletu smo bili razdeljeni v dve skupini.

  On the trip, we were divided into two groups.

  Here, 'skupini' is the plural form in the locative case, indicating placement in two groups.

• V naši skupini je veliko nadarjenih pevcev.

  In our group, there are many talented singers.

  Here, 'skupini' is in the locative case within a possessive context, referring to the members of our group.

• Skupine ptic so se zbirale na drevesih.

  Groups of birds were gathering in the trees.

  Here, 'skupine' is the nominative plural form, referring to the subject: groups of birds.