IPad and iPhone charger difference?

I was wondering what the difference is. The cord doesn't look any different so I bought two iPhone chargers (one for my iPad and one for my brother's iPhone) his worked well but my iPad took forever to charge. It the cord really different or is there something else wrong? Is it the adapter, my iPad, or I just have bad luck? LOL help me ><

Haha sorry apple just wants money. If it says iPhone charger, it works best on iPhone, if it says iPad charger, it works best on iPad. Also it might be because it takes iPad twice as long to charge all the way, since the battery is double the iPhones.

IPad charger is 10W and iPhone charger is 5W that's why iPad charger charge the iPhone in less than 1 hour.

Look at the wattage on the adapters! You're looking for a 10W adapter.

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