Answer 2: Enamel is the hard material that coats your teeth, and is made mostly of a mineral. However, we call other things enamel. There's enamel paint, which is totally different, and there's also porcelain enamel, which is used to make a lot of dishes.
All of this is due to Amazon's unique approach with the Echo. It's not a portable speaker like we've seen from Jambox and Logitech. Instead, it's a rather large, cylindrical device that needs to be plugged into power. It's something you'll likely just leave in a single spot in your home.
Since much of the functionality of the Dot and the Echo are delivered from Amazon via a broadband connection, they are remarkably similar. Set up is the same for both. You plug the Dot in and press the button on top. After an orange light appears, you can connect it to your Wi-Fi network.