This is the 13297th most frequent Swedish word.
tvillingarna
"The twins."
In this sentence, 'tvillingarna' is used as the subject noun referring to a pair of twins.
Tvillingarna leker i parken.
The twins are playing in the park.
Here, 'tvillingarna' functions as the object of the clause, indicating the pair of twins that were seen.
Jag såg tvillingarna på skolan idag.
I saw the twins at school today.
In this sentence, 'tvillingarna' is the subject noun, describing the pair of twins and their reputation.