der Geldautomat
ATM
A machine where you can withdraw cash from your own account using a bank card.
Ich muss noch schnell zum Geldautomaten, bevor die Geschäfte schließen.
I still need to quickly go to the ATM before the shops close.

ATM
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ATM
A machine where you can withdraw cash from your own account using a bank card.
Ich muss noch schnell zum Geldautomaten, bevor die Geschäfte schließen.
I still need to quickly go to the ATM before the shops close.

'Geldautomat' (ATM) is a compound noun made up of 'Geld' (money) and 'Automat' (machine). So it is literally a machine for money.
Der nächste Geldautomat ist gleich um die Ecke.
The nearest ATM is just around the corner.
Pay attention to the prepositions: you go 'zum Geldautomaten' (to the ATM, direction), you stand 'am Geldautomaten' (at the ATM, location), and you get money 'aus dem Geldautomaten' (from the ATM, source).
Kannst du auf dem Weg nach Hause am Geldautomaten anhalten?
Can you stop at the ATM on the way home?
The most common action at an ATM is described with the separable verb 'Geld abheben' (to withdraw money).
Ich muss Bargeld abheben, weil das Restaurant keine Karten akzeptiert.
I need to withdraw cash because the restaurant doesn't accept cards.
machine / automaton
'der Automat' is a general word for a machine that independently dispenses something or provides a service. 'der Geldautomat' is a specific kind of machine: you use it to withdraw cash with a bank card. The words can easily be confused because a Geldautomat is indeed an Automat. But not every Automat is a Geldautomat. When it is about cash and a bank card, the more precise word is 'Geldautomat'.

Im Urlaub sucht Julia einen Geldautomaten, weil sie Bargeld braucht.
On vacation, Julia looks for an ATM because she needs cash.
Der Automat am Bahnhof verkauft Fahrkarten für den Zug.
The machine at the train station sells train tickets.