Yes. Airpods will work in the same capacity as EarPods.
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.
When you take any of the AirPods from the ear, it automatically pauses the music.
You can also double-tap on the stem to invoke Siri, and ask it to play/pause the music.
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.
You can use Apple AirPods with your Android phones. Check this video to know more on how to connect your Android phone with Apple AirPods.
Look past their offbeat design and you'll find that Apple AirPods' compact size and high convenience factor are a winning combination.