This is the 3197th most frequent German word.
enkelkinder
Grandchildren.
Here, 'Enkelkinder' is used as the subject of the sentence, indicating the grandchildren engaging in the action of playing.
Die Enkelkinder spielen fröhlich im Garten.
The grandchildren are playing happily in the garden.
'Enkelkinder' here is in the dative case, as the indirect object receiving the stories narrated by the grandparents.
Oma und Opa erzählen ihren Enkelkindern spannende Geschichten.
Grandma and Grandpa tell their grandchildren exciting stories.
In this sentence, 'Enkelkinder' is in the accusative case, functioning as the direct object receiving the action of seeing.