Nearly every connection to the internet is dependent on the Domain Name System. DNS, as it's more commonly called, translates domain names like gadgethacks.com into IP addresses, which is what network devices use to route data. The problem with DNS servers is that they don't have your privacy in mind.
If you're completely new to Android, you're in for a treat with all of the software tweaks and customization options that your smartphone or tablet offers out of the box. But if you really want to take things to the next level, the ability to mod your device expands exponentially when you're rooted.
Android comprises an entire ecosystem of apps, games, functions, and features, so it would only make sense that it has its own lexicon. Words, phrases, and acronyms that didn't exist ten years ago are now used in an off-the-cuff style by developers and support technicians across the web.