Apart from the design difference - the biggest difference is AirPods are wireless while EarPods are not wireless. The AirPods comes with lot more openings compared to EarPods.
Yes, Apple Airpods are compitable with Samsung Galaxy S7 Edge.
Yes, you can use Apple Airpods with any Samsung mobile phone, which has Bluetooth 4.0 or higher connectivity option.
If you do not want to use your AirPods with your iPhone, you can disconnect them easily. Follow below steps to disconnect AirPods with the iPhone.
Step 1: Go to Settings
Step 2: Tap "Bluetooth"
Step 3: Tap "information button" besides your AirPods
Step 4: Tap "Forget this device"
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.