Yes. Airpods will work in the same capacity as EarPods.
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.
Absolutely fantastic. You will also get slight more bass when you listen to music.
Yes, you can use Apple Airpods with any Android mobile phones, which has at least Bluetooth 4.0 connectivity option.
Apple have never confirmed that AirPods are water resistant but many of our friends have told us that AirPods and it's charging case survive water tests.
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.