cable
The German word 'Kabel' is used in the same way as the English word 'cable'. It refers to a rope-like piece of equipment made of wires, used to carry electricity or signals. For example, you might use a 'Kabel' to connect your computer to the internet.
I have connected the cable to the computer.
In this sentence, 'Kabel' is a direct object, the thing being acted upon by the verb. The verb 'angeschlossen' (connected) directly affects the cable - it is being connected to something.
The cable is too short.
Here, 'Kabel' is the subject of the sentence. It's the thing that is too short. The phrase 'zu kurz' is an expression in German meaning 'too short'.
Please give me the cable.
In this sentence, 'Kabel' is the direct object of the sentence. The action, i.e., 'geben' (give), is being done to the cable. The speaker is asking the listener to give them the cable.