Screen Type
The most common types of screen today are flat screens, where we have two different types, TFT (LCD) and LED. The old, heavier type is called Tube.
Built-in Speakers
Generally the speakers inbuilt in monitors are very basic with only a couple of watts per channel, so they're not something you'd want to listen to high quality CDs or DVDs on, but could prove handy if you just want to listen to streamed radio over the internet and don't have any other speakers set up with your computer.