die Schaukel
swing
A seat suspended by ropes or chains, on which you can swing back and forth for fun.
Die Kinder spielen am liebsten auf der Schaukel im Garten.
The children like playing on the swing in the garden best.

swing
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swing
A seat suspended by ropes or chains, on which you can swing back and forth for fun.
Die Kinder spielen am liebsten auf der Schaukel im Garten.
The children like playing on the swing in the garden best.

The noun 'die Schaukel' (the swing) is derived directly from the verb 'schaukeln' (to swing). The verb describes the activity, while the noun describes the equipment used to do that activity.
Komm, wir gehen schaukeln!
Come on, let's go swing!
To describe the position or the activity on a swing, you use the preposition 'auf' with the dative. You sit or swing 'auf der Schaukel' (on the swing).
Das kleine Mädchen sitzt glücklich auf der Schaukel.
The little girl is sitting happily on the swing.
A very common action connected with a swing is 'Anschubsen' (giving someone a push). It means giving someone a push so that the swing starts moving or swings higher.
Kannst du mich bitte auf der Schaukel anschubsen?
Can you please push me on the swing?