This is the 10595th most frequent Swedish word.
kortfilmerna
"The short films."
The word 'kortfilmerna' here is in singular form in definite article, referring to specific sets of short films, mainly used as the subject in the sentence.
Kortfilmerna är verkligen underhållande.
The short films are really entertaining.
Here 'kortfilmerna' is the object of the verb 'såg', indicating the viewing of specific short films.
Vi såg kortfilmerna på festivalen igår.
We watched the short films at the festival yesterday.
The usage of 'kortfilmerna' here emphasizes its suitability for a specific purpose, referred to with emphasis through the definite form.